tacn-cntt-1

Front

What is computer?

Back

Computers are electronic machines which can accept data in a certain form, process the data and give the result of the processing in a specified format as in formation

Front

How many parts of computer? What are they?

Back

There are three main parts of computer. There are

- the central processing unit (CPU)

- the main memory

- the peripherals

Front

What is computer hardware?

Back

Computer hardware is the physical components of a computer system, such as the motherboard, CPU, RAM, storage devices, and peripherals like keyboards and monitors

Front

What is computer software?

Back

Computer software is a collection of programs, data, and instructions that enable a computer to perform specific tasks or operations

Front

What are registers? How many types of register? What are their functions?

Back

The registers, which are high-speed units of memory used to store and control information

There are three types of register. There are:

- address register: store an address in memory

- function register: control the processing of a function

- sequence control register: control the sequence in which operations are performed by the computer

Front

What does CPU stand for? What is it? How many basic steps does CPU need in the process? What are they?

Back

- Central Processing Unit: CPU is the electronic circuitry within a computer that executes instructions that make up a computer program

- There are four steps that nearly all CPUs use in their operation: fetch, decode, execute, and writeback

Front

What are 3 main parts in CPU? What are their functions?

Back

- Control unit (CU): examines the instructions in the use's program, interprets each instruction and causes the circuits and the rest of the components to be activated to execute the function specified

- Arithmetic Logic Unit (ALU): preforms mathematical calculations (+, -, etc.) and logical operations (and, or, etc.)

- Register: used to store and control information

Front

What is RAM?

Back

Random access memory (RAM) is fast-access memory that is cleared when the computer is power-down

Front

What is ROM?

Back

ROM used for storing part of the operating system and application software known as 'firmware', can only be read; cannot written to or altered in any way

Front

What are output devices? What are they?

Back

Out devices are devices which transmits or displays processed data

e.g. a printer, disk drive, or VDU screen