Computer Fundamentals Index

Computer Introduction Types of computer Characteristics of computer Uses of computer History of Computers

Computer Languages

Low Level language Middle level Language High level language

Computer Generation

Generation of Computers First Generation of Computer Second generation of Computers Third generation of Computers Fourth generation of Computers Fifth generation of Computers Sixth Generation of Computer

Peripheral Devices

Input devices Output device


Block diagram and basic components Control processing unit (CPU) Software Hardware


Computer Memory Registers Memory Hierarchy RAM Vs ROM Understanding file sizes (Bytes, KB, MB, GB, TB, PB, EB, ZB, YB)

Computer Network

Types of Network Types of Area Networks (LAN, WAN, MAN) TCP Flags

Computer Virus

Computer Virus

Computer Ports

Computer Ports


How to hack a computer How much do Computer Programmers make How does a Computer work How to associate a file with a program How does a computer convert text into binary How does a computer process data into information How to fix a CD-ROM DVD How to fix the no input signal How to install computer memory How to associate a file with a program How to log out of your operating system How do I change my name on Google How to installation or uninstallation Microsoft Paint How to fix a not a valid Win32 application error How to fix missing Microsoft Windows .dll files How to use a computer keyboard How to erase my hard drive and start over How can I test how many words I can write a minute How to shut down a computer How do I open and edit the Windows registry How to edit the registry from the command line How to restart Microsoft Windows How to install a computer processor How to open Microsoft Paint How to fix problems in Windows after installing new software How to enable or disable the preview pane of Microsoft Outlook How to open a Microsoft .wps or Works file in Word How to view the HTML source code in Microsoft Word How to View or Change the Screen Resolution of a Monitor How to Connect and Install a Computer Keyboard How to Delete Temporary Files in Windows 10 How to determine Which Version of Microsoft Office I'm using How to find out how much hard drive space is available How to Fix PC Stuck on Verifying DMI Pool Data How to choose which items show in the notification area How to find similar images using Search by Image How to fix Low Memory and out of memory errors How To Replace the CMOS Battery How do I Update my Antivirus Program How to fix a general protection fault How to Identify problems in the Windows Device Manager How can the Base be Shown How to test if a Website or Web Page is down How Much is 1 Byte, Kilobyte, Megabyte, Gigabyte, etc How to fix a CMOS checksum error How to Fix a Windows CD-ROM, DVD, or Disc Drive Issue How to Open Safe Mode How to Password Protect Files and Folders in Windows How to Reset CMOS or BIOS Settings How to use Computer Keyboard How to create a text file How to enable or disable DHCP in Windows How to test computer memory to determine if its bad How do double space or change line spacing in Microsoft Word How do I know if I have Windows Administrator Rights How many cores does my computer have How to Create a Directory or Folder How to Enter and Exit the BIOS or CMOS Setup How to change Windows Compatibility mode How to clear your internet browser history How to Connect Computer Speakers How to Copy a Web Page Link or URL How to install a Hard Drive or SSD How to Open the Windows Control Panel How to split a screen in Windows How to copy text from a scanned PDF


Who invented Computer What are the advantages of the Internet? What are the disadvantages of the Internet? Is my computer 64 bit? What is Edge Computing? What is a Router? What is Monitor What is Printer What is a Web Browser What is Microphone What is a Webcam What is PC What is Keyboard What is Motherboard What is WAP What is URL What is a Digital Assistant When was the first Computer Invented What is Modem What is Firmware What is Imperative Programming What is Protocol What is Safe Mode What is Device Driver What is Hybrid Topology What is Mesh Topology What is Procedural language What is a hyperlink What is a Username Who invented the Internet What is Video Card What is Sound Card What is Binary What does Alt+B do What does Alt+D do What does Alt+E do What does Alt+Esc do What does Alt+R do What does ALT + Q do What does Alt + Tab do What is Data Manipulation What is a touch screen What is Back Panel What is Analog Monitor What is AR lens What is an ATX Style Connector What is a File System What is Hard Disk Drive (HDD) What is a boot device What is accessibility What is Line In What is network Interface card (NIC) What is Optical Disk Where can I ask questions on the internet What is Auto Rotate What is CAD (Computer-aided design) What is Cable Modem What is Home Page What is boot menu What is braille reader What is flash memory What is Windows What is Clipboard What is Cyber Warfare What is Myspace Why has my IP address changed What is Jacquard Loom My computer is running slow, what steps can I do to fix it What is a Kensington Lock What is a multicore processor What is automation Are smartphones and tablets computers What is a Login Script What is a Loosely Typed Language What is Multitasking? Why my computer monitor shows no display or black screen What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is the Pg Dn Key (Page Down Key) What is the Pg up Key (Page up Key) What is Palmtop Computer What is a Processing Device What is a Print Preview What is the Print Screen Key What can I do if my computer or laptop is lost or stolen What is a Model Number What are the currently available antivirus programs What are Toggle keys What is a Case fan What is a Silicon Chip What is a Slate PC What is a TAB stop What is an Octothorpe What is Task Pane What is Task View What is the svchost.exe file used for in Windows Where can I find free online virus scanners Why am I unable to increase the resolution in Windows What is Autofill When I click my mouse, it sometimes double-clicks What is Scratch What is UDIMM What is MsConfig What is an Expansion Card What is an Executable File What is an Elevated Command Prompt What is an AC Adapter What is AIMBOT What is a Software Suite What is a LED Monitor What does Alt + X do What does alt + space do What does Alt + O do Now that I’ve got a Computer, what can i do What is a Punch Card What is RDIMM What is Select All What is Serial number What is Thermos flask What programs can I use for speech recognition What are the Advantages of Computers What are the Disadvantages of Computers What does Alt + T do What Hardware Device Drivers should be Updated What is a Desktop What is a Ring Topology What is CMOS What is a Directory What is a Mechanical Mouse What is a Plotter What is a Variable What is an Icon What is Data What is HDMI What is Remote What is Right-Click What is SMPS Why does my Laptop not turn on What is a Copyright What is a Cordless Mouse What is a CSV file What is a Joystick What is a Start Button What is a Taskbar What is an Alignment What is an Output Device What is Cat 5 What is Google Chrome What is Post What are Recordable DVD Drives What Does Alt + F4 Do What Does Alt + L Do What is a bit (Binary Digit) What is a cable What is a Calculator What is a capacitor What is a Cold Boot What is a Dialog Box What is a Dual-boot What is a Slide What is A4 What is AM What is Barcode Reader What is EHCI What is a Header What is a Joystick What is a Secondary Storage Device What is Access Time What is Account Sharing What is an Asterisk What is Asynchronous DRAM What is Back Quote What is BIOS What is Borderless Printing What is Case Badge What is CD-ROM What is Chat Slang What is Composite What is RJ Cable What Are Bottom Row Keys What is SAN What is Tray What is VDU What Does Alt + M Do What Does Alt + P Do What is a Cell What is a Command Key What is a key Combination What is a Menu Bar What is a Startup What is a T What is Chat What are the F1 through F12 keys What does Alt + Enter do What Does Alt + Home DO What does Alt + R do What does Ctrl + B do What Does Ctrl + Enter Do What Does Ctrl + R Do What does Ctrl + G do What does Ctrl + 9 do What does Ctrl + End do What does Ctrl + O do What Does Ctrl + P do What Does Ctrl + Q do What is a Colon What is a Core What is Apple Touch Icon What is Clock What is Code What is Computer Crime What is Ctrl What is DAT What is Data diddling What is Date Why won't my computer turn on What Does Alt + N Do What does ctrl + 2 do What does ctrl + space do What does Ctrl + W do What does Ctrl + T Do What Does Ctrl + 2 do What does Ctrl + 5 Do What are the most common file types and file extensions What are Sticky keys What Does Ctrl + Shift + Esc Do What is Settings What is Task Manager What is Taskbar What is a DNS Resolver What does ctrl + 1 do What does ctrl + 0 do How to install software What is a Folder What is a Legend What is a MAC Address What is a Path What is a Ruler What is a Toolbar What is an Intranet Meaning and Differences with Internet What is an SSD What is Inheritance What is Tablet What is Depth What is Docking Station What is Double Click What is a Solid Ink Printer What is a Temporary File What is Backup and Restore What is Electronic Payment Systems Eps What is Marshalling


Difference between hardware and software Difference between multiprocessor and distributed systems Difference between Desktop and Laptop Difference between File and folder Difference between Hard Copy and Soft Copy Open Source Programs vs Closed Source Programs Difference between Optical Fibre and Coaxial Cable Difference between Website and Webpage Difference between Classes and Objects Input VS Output Difference between Primary and Secondary Storage with Examples


Quantum Computing Computer Software Autoexec.bat and config.sys info Update an Antivirus Use of Internet Advantages and disadvantages of Email Computing Power Internet Explorer Shortcut Keys Advanced Encryption Standard (AES) Augmented Reality Infrastructure Readiness Check Top 10 Internet tips and tricks Introduction and Features of FoxPro Features of Multimedia Top 10 online services and applications Receiving S.M.A.R.T. status bad backup and replacing error Version Control System Uninstalling Software or Apps in Windows Data Warehouse Increase or decrease font size in Word using keyboard shortcuts Mouse not detected or working in Windows Computer Cleaning Information and Steps Function Keys on Keyboard Windows 7 Alt+Tab won’t stay on top or stick 10 Essential Examples of Web Browsers Binary Subtraction using 2’s Complement Case Sensitive Languages Computer Pioneers and people who are CEO Microsoft Word Shortcut Keys Parts of Computers Names, Definitions and Images ROM and its Types Basics of Information Technology Characteristics of a Good Software Design Characteristics of Management Information System Classification of Management Information System Implementation of MIS Input Devices of Computer Definition Limitations of Management Information System 3 Types Of Network in Computer Block Diagram Of Control Unit Difference Between Computer and Embedded System Difference Between Hard Disk and Floppy Disk Abstraction in OOAD Hardware and Software Devices Optomechanical Mouse CMOS Memory What is a Terminal? What is Graphic Design? What is Load? What is Passcode? What is Reboot? What is Registry? What is Safe Mode? What is Standby? What is SYN (Synchronize)? What is Task Manager? Attribute Computing BPS in Computer Bulletin Board System Light Pen Input Device 3 TYPES OF NETWORK IN COMPUTER Block diagram of control unit What is a Solid Ink Printer? What is a Temporary File? What is an App launcher? What is Backup and Restore? What is a Tab Character? What is the Core i3? What is Paint? What is a Workbook? Advantages and Disadvantages of Online Education What is a String? What is a VDU (Visible Display Unit)? 50 Uses of Computer What is Workspace? What is a Procedural Language? What is VGA (Video Graphics Array)? Object Linking and Embedding in MS Word Semiconductor Memory Types of Parallel Computing Web Resources Difference between Virus, Worm and Trojan Horse Difference between HQ (High Quality) and HD (High Definition) What is Text Wrapping What is Timestamp? Semiconductor Ram Memory What is a File Attribute? What is a Video Call? Difference between SDRAM and DDR What is ANSI? Difference between DOS and Windows How to Set the Path and Environment Variables in Windows? Mainframe System What is ScanDisk? C drive in Mac Computer Memory Table How to Change the Keyboard Language in Windows? What is a Video Call? What is a Zoom Slider? What is Floppy Disk in Computer What is the most Popular Operating System? OMR in Computer What is a Work Area?

Types of Computers

Computers can be categorized in two ways: size and data handling capabilities.

Based on the size, computers are divided into four types:

1. Super Computer

The super computer introduced in the 1960s and developed by Seymour Cray, he developed CDC 1604, and that was the first supercomputer in the world. The supercomputer is a high-level performance computer to the general purpose. This kind of computers is used for scientific and engineering applications to handle extensive databases.

 The multicourse processors and Graphics processing unit (GPUs) are used in the supercomputers. The supercomputer performs parallel processing. There are two types of parallel processing.

  1. Symmetric multiprocessing (SMP)
  2. Massively Parallel Processing (MPP)

The supercomputers consist of ten thousands of processors, which can perform billions or trillions of calculations per second.

Construction diagram of a supercomputer
Construction diagram of a supercomputer

The fastest supercomputer of the world was the Sunway TaihuLight in the city of wixu in china. In these days, supercomputer is used in application such as aerospace, automotive and petroleum industries.

Characteristics of supercomputer

There are some characteristics of supercomputer which are given the following:

  • Support more than one hundred users at a time.
  • Capable of handling a massive amount of calculations, the human is not able to solve such extensive calculations.
  • Many people can access supercomputer at the same time.
  • The supercomputers are the most expensive computers.
  • This type of computer supports a high computation speed of CPUs.
  • The supercomputers have more than one CPU (Central processing unit) which contains instruction so that supercomputer can interpret instructions and execute arithmetical and logical operations.
  • The supercomputer is used in applications such as national security, nuclear weapon design, and cryptography.

2. Mainframe Computer

The mainframe computers are mainly used in large organizations. These computers are used for complicated applications to process a large amount of data. The mainframe computers are the vast computer and take space of the entire room or the whole floor. This type of computers can run multiple operating systems at the same time. The mainframe computers are used for online data storage; these are used for the transaction process in banking and airlines etc.

2.	Mainframe Computer

  Characteristics of mainframe computer

  • The mainframe computers have a large number of CPUs with high processing power.
  • These computers have large memory capacity; sometimes it is more than 8 Gigabytes.
  • The mainframe computer systems are able to share their workload to different processors; due to this feature, and it has increased the performance.
  • The mainframe computers have centralized computing features. 
  • These computers can run on multiple operating systems.
  • The thousands of users can operate and use the machine at the same time; it is possible due to its time-sharing ability.
  • The reliability is the main feature of Mainframe systems, due to this feature its usage becomes widespread.

3. Mini Computer

The mini-computer is the type of small computer, which is developed in the mid of 1960s and developed by IBM Corporation. The mini-computer is varied between mainframe and microcomputer because it is shorter than the mainframe computer in size. The mini-computer has all the features of a massive computer, these are multi-user systems, where users can work simultaneously. These mini-computers can do time-sharing, batch processing, and online processing. The size of mini computers range from 12 inches in width to less than 7, and this size is especially attractive to the students; due to this size, they can carry their mini-computer everywhere. The tablet, PC, desktop mini-computers, cell phones, notebooks, high-end mp3 players, etc. are the types of mini-computers.

Advantages of mini computers

  • The mini-computers are money-saving computers, and everyone affords it quickly, the budget of these computers are not so high.
  • These computers are small in size so, anyone can carry easily anywhere.
  • These are portable; we can fit those computers in laptop bags and purses.
  • If we compare mini computers to others, then they have a longer battery life.
  • The mini-computers are very light weighted and have full features as compare to other computers. Due to its lightweight, it’s easy to carry anywhere.

4. Micro Computers

The Hewlett-Packard (HP) developed the microcomputer in 1970. The microcomputer is also known as the device based on the single-chip microprocessor, and these computers are smaller than mainframe or mini-computer. The microcomputers contain the memory in the form of read-only memory (ROM), and random access memory (RAM).

Architecture of microcomputer

Architecture of microcomputer
Architecture of microcomputer

The first microcomputer was Micral, released in 1973, and it was the first non-kit computer based on a microprocessor. These computers have multi-users, and it contains various components such as CPU, one single chip, a microprocessor, input/output devices, and storage unit.

Characteristics of microcomputer

  • It is easily affordable due to its small in size and low cost prize.
  • It has low computing power.
  • The microcomputer is commonly used for personal application.
  • These type of computers has its central processing unit (CPU) on an integrated circuit (chip) called a microprocessor.

Based on data handling, the computers are divided into three parts

1. Analog computer

 The analog computers are used to process the analog data, this type of computer store the data in the continuous form, that data cannot have a discrete value such as speed, temperature, pressure, etc. These computers directly accept the data from the measuring device without converting it into numbers and code. The resistance of the capacitor, frequency of signal and voltage, etc. are the examples of an analog computer.

2. Digital Computer

These computers are designed to represent the calculation at high speed and solve the problem by processing the information in the discrete form. It operates the data, including letters and symbols that are expressed in the binary form 0 or 1. The digital computers can analyze and organize the vast amount of business data.

Digital Computer

3. Hybrid computer

  The hybrid computers inherit the features of analog computers and digital computers.  Hybrid computers have the functionality of both analog and digital computers. The component of the hybrid computer is designed in such a way that makes the device fast and accurate. The hybrid computer is used in special applications where both analog and digital data are processed.  For example, in the cement plant, the calculations are calculated with the help of digital computers.