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Pub Quiz
What is the purpose of the system clock?
What is the purpose of the PC?
Pub Quiz
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1
What is the purpose of the PC?
Taste good
Hold the address of the current instruction
Count program lines
Hold address of the NEXT instruction
2
What is the purpose of the system clock?
Count.
Synchronise internal components
Tell the time
Carry out mathematical and logical operations.
3
What is the first thing to happen in the fetch part?
PC value copied into MBR
PC value is copied into MAR
PC value incremented
4
What is the purpose of the control bus?
Carry data
Send instructions to internal components.
Carry memory addresses.
Show graphics
5
Which of the following busses is bidirectional?
Data
Control
Buffer
Address
6
What is the purpose of the control unit?
Carry out mathematical operations.
Fetch instructions from memory.
Decode and execute instructions.
Carry out logical operations.
7
What is a word?
The amount of bits allowed on the control bus.
"Hello"
Something teenagers say
The amount of bits a processor can operate on.
8
After the instructions are copied to the MBR where are they copied next?
Status Register
Current Instruction Register
Memory Buffer Register
Memory Address Register
9
How many wires are required on the address bus to address 32 memory locations?
5
32
6
4
10
What is the purpose of I/O controllers?
KEYBOARD
Provide an interface between the CPU and external components
Store programs in main memory
Allow the user to move the mouse.
11
Which architecture is most suitable for embedded systems?
Gothic
Harvard
Von Neumann
Roman
12
What is the purpose of the MBR?
Hold the address of the next instruction.
Hold the address of the current instruction.
Hold data transferred from main memory.
Evaluate an operation.
13
Which of the following busses is uni directional?
Control
Number 1
Data
Address
14
Which of the following correctly adds 5 to the value in register 5 storing the result in R1?
ADD R1, R5, #5
MOV R1, R0
STR R0, #500
ADD R4, R0, #5
15
Which of the following is a performance factor for processors?
Clock Speed
VDU Size
Amount of memory
Number of cores
16
What is the purpose of the SR?
Indicate the status of results.
Command the processor.
Indicate when the processor is empty.
Indicate the processor is done.
17
What does MBR stand for?
Memory buffer register
Mainstream bandwidth Rio
Memory data register
Memory address register
18
What does ROM stand for?
Random-Access Memory
Read-only memory
Main memory interface
CPU
