Top Ten Most Important Questions Answer About Computer and IT(SET-II)

Top Ten Most Important Questions Answer About Computer and IT(SET-II)

Q11: What is ALU( Arithmetic logic Unit)?

Ans: ALU is a part of CPU. Actual executing of instruction takes place in this part. All arithmetic and legal operation are performed in ALU. It consists of two units:

1.    Arithmetic Unit

2.    Logic Unit.

Q12: What is Arithmetic Unit?

Ans: It perform basic arithmetic function such as addition, subtraction, multiplication and division. ( +, -, x, /) etc.

Q13: What isLogic Unit?

Ans: It perform basic logical operations like comparing tow data items to find which data item I greater than, equal to or less than the other.

Q14: What isControlUnit?

Ans: It is an important component of CPU it acts like a supervisor of the computer it coordinates all activites of Computer System.

Q15: What is Memory?

Ans: Data and instruction are stored to in memory to be executed. This memory is temporary storage unit of data, instruction and information. It is also called primary memory.

Q16: What is bit?

Ans: Bit is the smallest unit of data in the form of 1 and 0.

Q17: What is byte?

Ans: Byte contains 8 bits. In modern digital computer the word size is usually a multiple of 8 bites such as 2 bytes or 4 bytes.

Q18: What is RAM (Random Access Memory)?

Ans: RAM is a temporary memory it is very important role is the processing speed of computer. After computer turn off all the data are erased form RAM.

Q19: What is ROM (Read Only Memory)?

Ans: ROM is a permanent memory its contain information about system and this information are load during manufacturing. User can store further data into RAM.

Q20: What is Access time?

Ans: This is measure of computer memory operating speed .It is the amount f time required to perform a read operation.