TYPES OF COMPUTER

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8 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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TYPES OF COMPUTER


1.(a)

Describe the difference between a microcomputer and a

mainframe computer.

[2]






1.(b)

Give
two
advantages of a mainframe system to a large company.

[2]



(i)




(ii)




1.(c)

Suggest
two
other kinds of organisation which might h
ave a


mainframe system.

[2]



(i)




(ii)





Answer to Question 1



2.

An insurance company uses a mainframe computer with


approximately 200 terminals connected to it throughout its head
office. They are considering updating thei
r whole system to a
network of microprocessor computers.



Suggest
two
benefits of microprocessor computers over a


mainframe system.

[2]



(i)





(ii)





Answer to Question 2



3.

A large library is currently equipped with a mai
nframe system and
over 150 terminals where users can search the library catalogue.
They are considering updating the whole system to a network of
microprocessor computers.


3.(a)

What are the relative advantages of microprocessor computers


and mainframe s
ystems?

[4]













3.(b)

Discuss the different investigation methods they could use to find


out what the problems are with the current system and what is


needed from the new system.

[6]



(i)





(ii)





(iii)





(iv)





(v)





(vi)






Answer to Question 3



4.

Give
three
factors which must be considered when designing a


data capture form.

[3]



(i)





(ii)





(iii)






Answer to Question 4


TYPES OF COMPUTER ANSWERS


1.(a)

A microcomputer i
s a small computer which has its own
microprocessor.

A mainframe computer is a large computer which can support
thousands of terminals/users.

[2]


1.(b)

Two from:

Large amounts of data can be processed.

Large volumes of data can be stored.

Many users can c
arry out different tasks at the same time.

It is convenient and more secure to have all the processing and
storage in one place.


Any other suitable answer.

[2]


1.(c)

Two from:

Governments.

Charities.

Weather Centers.

Universities.


Any other suitable ans
wer


not company.

[2]



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2.

Two from:

More versatile.

Internet access.

Easier to use.

More modern / widespread.


Any other suitable answer.

[2]



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3.(a)

Four from:

Advantages of Mainframes:

Large amounts of data can be processed.

Large volumes of data can be stored.

Many users can carry out different tasks at the same time.

It is convenient and more secure to have all the processing and
storage in one place.


Advanta
ges of microprocessor computers:

More versatile.

Internet access.

Easier to use.

More modern / widespread.



Any other suitable answers.

[4]


3.(b)

Six points from:

Interviews:

Flexible


the interviewer can modify his questions depending on
what the perso
n says.

Can get detailed information.

Time consuming.

Can only talk to a few people.

People may be unwilling to be interviewed.



Questionnaires:

Quick method of collecting data from many members of an
organization.

No pressure to answer questions from an
interviewer.

Responses can be analysed by computer.

Need careful planning to ensure the right questions are asked and
nothing is missed out.

Inflexible
-

cannot find further detail on specific areas.

People may lie or just put down random answers.



Observ
ations / Direct use of the system:

Clear picture of old system.

People may use system differently when they are being watched.

Unlikely to illustrate minor errors/bugs.



Any other suitable answers up to a maximum of 6 marks.

[6]



R
eturn to Questions


4.

Three from:

Who the user will be.

Validation rules necessary.

Format that the data is required in.

Consistency with other parts of the same software.

Which fields are mandatory.

What the layout / colour should be.

What online help s
hould be provided?


Any other suitable answer.

[3]



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