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Fall
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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
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,
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 each
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
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 issue an I/O command to a module and then go on
other work. The I/O module will then interrupt the
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
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