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IGCSE Computer Science Hardware Flashcards | StudBud
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IGCSE Computer Science Hardware
IGCSE Computer Science Hardware
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1
. Which bus carries control signals to coordinate hardware components?
system bus
Data bus
control bus
Address bus
2
.What is the primary function of an actuator in a computer system?
To convert signals
To process data
To perform mechanical actions
To store information
3
. In the context of computer sensors, what creates a feedback loop?
Regular maintenance checks
Continuous power supply
Continuous monitoring and adjustment
Sensor calibration
4
Which type of projector typically produces more vibrant images?
LED projector
lCD projector
DLP projector
crt projector
5
6. In modern computers, what is the purpose of cache memory?
To manage input/output operations
To permanently store the operating system
To replace RAM entirely
To store frequently used data and instructions
6
What is the primary function of an ADC in a sensor system?
To convert analog to digital signals
To convert digital to analog signals
To amplify analog signals
To store sensor data
7
How does overclocking affect a CPU?
It always improves performance safely
It may cause system instability
It increases system stability
It reduces power consumption
8
What is the purpose of multiple cores in a CPU?
To enhance parallel processing
To increase clock speed only
To eliminate the need for cache
To replace the need for RAM
9
Which type of sensor would be most appropriate for an automatic street lighting system?
Temperature sensor
Light sensor
Humidity sensor
Pressure sensor
10
Which register holds the address of the memory location being accessed?
Memory Data Register
Current Instruction Register
Accumulator
Memory Address Register
11
. Which type of printer is most cost-effective for high-volume printing?
Inkjet printer
Laser printer
Dot matrix printe
3D printer
12
4. Which type of memory is volatile and loses its contents when powered off?
ROM
Hard Disk Drive
RAM
Cache Memory
13
. What is the main advantage of capacitive touchscreens over resistive ones?
Works with any object
Multi-touch capability
Better durability
Lower cost
14
What is the main advantage of OLED displays?
Longer lifespan
Better contrast ratio
Higher durability
Lower manufacturing cost
15
What is the function of the Program Counter (PC) in the CPU?
To perform calculations
To track the next instruction address
To decode instructions
To store intermediate results
16
. What is the primary function of the data bus in a computer system?
To transmit data between components
To manage clock speed
To carry memory addresses
To store temporary results
17
. What is the main purpose of the Memory Data Register (MDR) in the CPU?
To track the next instruction address
To hold data being transferred to or from memory
To store the current program counter value
To perform arithmetic operations
18
in the Von Neuman Architecture, what is the primary function oh the control unit (CU)
to store temporary data
to decode and execute instructions
to perform mathematical calculations
To manage input/output operations
19
What happens during the "decode" phase of the fetch-decode-execute cycle?
Results are stored in memory
The program counter is incremented
The instruction is interpreted
Data is retrieved from memory
