2018/2019 WAEC EXPO RUNZ: COMPUTER STUDIES THEORY AND OBJ, QUESTIONS AND ANSWERS








Spread the news

1ai)

Computer system is a connection of electro-mechanical devices that link together forming a system inorder to perform automatic data processing (EDP)using software

(2a) Register is used to quickly accept, store, and transfer data and instructions that are being used immediately by the CPU.

(2b)
(i) Memory Address Register(MAR)
(ii) Accumulator Register(AC)
(iii) Memory data Register(MDR)

(2c)
(i) Register also provides a means to access counters for profiling system performance.
(ii)Register is used for storing the results that are produced by the system
(iii) MAR holds the memory location of data that needs to be accessed.

(2d)
(i) Registers are temporary storage in the CPU that holds the data the processor is currently working on, while Main memory holds the program instructions and the data the program requires.
(ii) Main memory can be addressed on a byte boundaries, where Registers may not be able to access all the bytes in a register.
(iii) Registers are the fastest memory in a computer while Main memory is the slowest still-fast memory in a computer.

Computer Answer
4b
-AND
-OR
-NOT
-NAND
-NOR
-X NOR e.t.c

examples of alternative logic gate
*An alternative logic gates typically means any logic gates that are not NAND or NOR

Example
-X OR
-X NOR


Spread the news





Be the first to comment

Leave a Reply

Your email address will not be published.


*