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.
