Full-Form Of COMPUTER is ” Common Operating Machine Purposely Used for Technological and Educational Research ” Computer is an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
Functionalities of a computer
Any digital computer carries out five functions in gross terms:
1. Takes data as input through input devices (That user insert)
2. Stores the data/instruction in its memory and use them.
3. Process that data and convert it into useful information.
4. Generates the output.
Controls all the above four steps.
Any kind of computers consists of HARDWARE AND SOFTWARE
Hardware: Computer hardware is the collection of physical elements that constitutes a computer system. Computer hardware refers to the physical parts or components of a computer such as the monitor, mouse, keyboard, computer data storage, hard drive disk (HDD),
system unit (graphic cards, sound cards, memory, motherboard and chips), etc. all of which are physical objects that can be touch.
Input device is any peripheral (piece of computer hardware equipment to provide data and control signals to an information processing system such as a computer or other information appliance.
Input device Translate data from form that humans understand to one that the computer can work with. Most common are keyboard and mouse
Example of Input Devices:-
|1. Keyboard||2. Mouse (pointing device)||3. Microphone|
|4. Touch screen||5. Scanner||6. Webcam|
|7. Touchpads||8. MIDI keyboard||9.|
|10. Graphics Tablets||11. Cameras||12. Pen Input|
|13. Video Capture Hardware||14. Microphone||15. Trackballs|
|16. Barcode reader||17. Digital camera||18. Joystick|
|19. Gamepad||20. Electronic Whiteboard||21.|
Note: The most common use keyboard is the QWERTY keyboard. Generally standard Keyboard has 104 keys
A CPU is brain of a computer. It is responsible for all functions and processes. Regarding computing power, the CPU is the most important element of a computer system.
The CPU is comprised of three main parts :
Logical operation like compare numbers, letters, or special characters * Control Unit (CU): controls and co-ordinates computer components.