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WorksheetsInstruction Set Architecture
Total questions: 10
Worksheet time: 6mins
If a computer has a word length of 64 bits, how many ASCII-encoded characters can be stored in one word?
2
4
8
1
Machine instructions always need multiple words to represent themselves.
True
False
Mark all true statements about memory out of the following
Each cell stores 0 or 1
Computer memory is like a collection of words
Dealt with in groups of fixed size
A single, basic operation is executed on a group of n bits
When storing a signed integer in a single word, which one is the sign bit?
The least significant bit
The most significant bit
In little-endian assignment, lower byte addresses are assigned to
the less significant bytes (the rightmost bytes) of the word
the more significant bytes (the leftmost bytes) of the word
Mark all the correct statements about Complex Instruction Set Computer (CISC)
The instructions may use more than one word of memory
The instructions may represent complicated operations
The approach is more recent than RISC
Sequence of instructions are hard to pipeline
Which type of addressing mode is used in
Load R2, 1000(R5)
Index mode
Immediate mode
Absolute mode
Register mode
Which type of addressing mode is used in
Add R4, R6, #100
Index mode
Immediate mode
Absolute mode
Base with index mode
Which type of addressing mode is used in
Store R3, SUM
Index mode
Immediate mode
Absolute mode
Register indirect mode
A computer must have instructions capable of performing the following operations, except
I/O transfer
Data transfers between the memory and the processor registers
Program sequencing and control
Arithmetic and logic operations on data
No exception (all four are necessary)
