2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
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Wednesday, 11th April, 2018
COMPUTER Studies 1 (Objective) – 04:00 p.m – 05:00 p.m
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COMPUTER OBJ:
1-10 AAAAACBACD
11-20 ACBDCDCAAB
21-30: DAAAACCDDC
31-40: BDBAADCCCA
41-50: DAAAB—–
(1ai)
Computer system is the complete computer made up of the CPU, memory and related electronics (main cabinet), all the peripheral devices connected to it and its operating system.
(1aii)
(i) Input Devices eg: keyboard, mouse
(ii) Output Devices eg: monitor, speakers
(iii) Secondary Storage Devices eg: hard disk drive, CD/DVD drive
(iv) Processor eg: CPU
(v) Primary Storage Devices eg: RAM
(1bi)
(i) Collection
(ii) Conversion
(1bii)
(i) EDSAC: Electronic Delay Storage Automatic Calculator
(ii) EDVAC: Electronic Discrete Variable Automatic Computer
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(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.
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4a)
Logic gate is the fundamental building block of digital integrated circuits which performs basic logical functions.
(4b)
(i) Standard Logic gate: NAND, NOR, NOT
(ii) Alternative logic gate: XOR, XNOR
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(5ai)
Booting is the initialization of a computerized system.
(5aii)
Cold booting: when the computer is started after having been switched off. While Warm booting: when the operating system alone is restarted (without being switched off) after a system crash or ‘freeze.’
(5b)
A peripheral is an ancillary device used to put information into and get information out of the computer.”
(5ci)
Keyboard
(5cii)
Printer
(5ciii)
Flash
(5civ)
Processor
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2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
2018/2019 WAEC RUNZ COMPUTER STUDIES ESSAY & OBJ QUESTIONS AND ANSWERS
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