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Spring
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Bca2050
1 What are the
functions of Input and output devices?
Answer: Input Devices
Let us bear in mind that instructions and
data are entered into a computer by means of input devices. The data input by
the human user is in the form of human-understandable language and needs to be
converted
2 What is the
difference between fixed and floating point numbers?
Answer: The term ‘fixed point’ refers
to the corresponding manner in which numbers are represented, with a fixed
number of digits after, and sometimes before, the decimal point. With
floating-point
3 Write a short
note on:
·
Program Counter
·
Memory Address Register
·
Memory Data Register
·
Instruction register
Answer: Program Counter (PC): The program counter, PC, is a special-purpose
register which is utilised by the processor to contain the address of the subsequent
instruction to be implemented. As
4 Explain the
process of fetching a word from the memory.
Answer: To fetch a word of
information from the memory CPU must specify the address of the memory location
where this word is located and request a read operation. This includes whether
the information to be fetched represents an instruction in a program or an
operand
5 Briefly
explain Interrupt Driven I/O.
Answer: Using Program-controlled I/O
requires continuous involvement of the processor in the I/O activities. It is
desirable to avoid wasting processor execution time. An
alternative is for the CPU to
6 What is RAID?
List the various RAID Levels.
Answer: RAID
(redundant array of independent disks, originally redundant array of inexpensive
disks) is a storage technology that combines multiple disk drive components
into a logical unit. Data is distributed across the drives in one of several
ways called "RAID levels", depending on what level of redundancy and
performance (via parallel communication) is required. RAID is an
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