| Examination
Questions (page 332) |
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1(a)
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(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
(ix)
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Storage device
Input device
Input device
Output device
Storage device
Input device
Output device
Input device
Storage device |
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(b)
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RAM
is used to hold the user's program and also the data.
ROM is used to hold part of the operating system such as the
system BIOS. |
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2(a)
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Immediate
Access Store is expensive compared with backing store. Immediate
Access Store only has a small storage capacity compared with
backing store. |
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(b)
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ROM
retains its data when the power is switched off. The contents
of ROM cannot be altered by the user. |
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(c)
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EPROM
stands for erasable programmable ROM. It can be used for any
situation where the ROM needs to be re-programmed e.g. machine
process development. |
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3(a)
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Read
write CD, Magnetic disk, Computer Output on Microfilm (COM),
Optical disks, ZIP drives. |
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(b)
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1.44
Mb |
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(c)
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A
copy of the contents of the data used for security purposes.
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4(a)
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A
binary digit ) or 1 |
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(b)
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A
32 bit machine is able to deal with 32 bits at a time. A 1 byte
machine only deals with 8 bits at a time. This means that a
32 bit machine is about 4 times faster |
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(c)
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Each
letter is stored in ASCII code with an 8 bit code used for each
letter. Since there are 4 letters, a total of 32 bits will be
needed. |
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5
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CD-ROM
and hard disk should be ringed. |
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6(a)
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(i)
(ii) |
Random
Access Memory
Read Only Memory |
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(b)
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RAM
contents are erased as soon as the power is turned off. The
contents of RAM can be changed by the user whereas ROM cannot. |
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(c)
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RAM
is used to hold applications programs and user data. |
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(d)
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ROM
is used to hold the boot/start up programs. It is also used
to store programs in control devices. |
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7(a)
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Floppy
disk and hard disk. |
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(b)
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Hard
disk. |
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(c)
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(i)
(ii)
(iii) |
Random
access memory
It is used for holding the application program instructions
and also the user data currently being processed.
Larger chunks of the program can be kept in memory which is
faster to access than the data held on backing store such as
a hard drive. |
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(d)
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Installation of new software is much faster.
Fast access to a huge amount of data.
Used for multimedia applications.
You can play music CDs whilst working on the computer or in
the same room. |
