One of the functions of an operating system is job scheduling. Explain what is mean by job scheduling.

29/12/2020

List two examples of:Third generation languages and Object oriented languages

b) List and explain three types of user interfaces.
c) Describe the following categories of software:
i) Firmware
ii) Proprietary software
d) a new company XYZ intends to go into the business of desktop publishing. Advise the company on three computer hardware system specification features to consider as a measure of enhancing performance.

(a) One of the functions of an operating system is job scheduling.
Explain what is meant by job- scheduling
Running of a particular job/ task under a system of priority, computer resource availability, time allocated to user etc.
(b) List and explain three types of user interfaces

Command driven- Command language dialogues are those in which the user types instructions to the computer in a formally defined language
Menu driven- These allow the user to issue commands by selecting choices from a menu of displayed alternatives
Graphical User interface- These are those in which the user manipulates, though button pushes and movements of pointing devise such as a house, a graphic or iconic representation of the underlying data.

(c) Describe the following categories of software

(i) Firmware
Soft ware that is burnt in computer ROM chips, usually system software
(ii) Proprietary Software
Any software as opposed to freeware, which is available freely

(d) A new company XYZ intends to go into the business of desktop publishing. Advise the company on three computer hardware system specification features to consider as a measure of enhancing performance.

Consider RAM capacity
Consider speed of computer
Consider hard disk capacity