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- 1. Multiple Choice
An ALU, control unit, some memory, and a clock can be combined together to make a basic, but functional ___
Unit of Programmable Control
Centric Programming Unit
Central Processing Unit
Programming Central Unit
- 2. Multiple Choice
The thing that makes a CPU powerful is the fact that it is ___
precise
logical
fast
programmable
- 3. Multiple Choice
The CPU is a piece of hardware which is controlled by easy-to-modify ___
software
hardware
firmware
smoothware
- 4. Multiple Choice
How many bits of data were contained in each address of the sample computer memory?
2 bits
4 bits
8 bits
16 bits
- 5. Multiple Choice
For our hypothetical CPU, the first four bits of data specified the ___
register
operation code
address
load instruction
- 6. Multiple Choice
For our hypothetical CPU, the second set of four bits of data specified ___
an opcode
the operation code
an address or registers
the load instruction
- 7. Multiple Choice
The eight bits of data, “0010 1110”, is much easier to read and understand when it's written as ____
LOAD_A 13
LOAD_A 14
LOAD_B 15
LOAD_B 16
- 8. Multiple Choice
Which component of a computer's central processing unit performs an "ADD" instruction?
the ALU
a register
the control unit
RAM
- 9. Multiple Choice
Which instruction is used to change the order of instructions, or to skip some instructions?
LOAD
STORE
SKIP
JUMP
- 10. Multiple Choice
The instruction JUMP 0 would cause the program to go ___
back to the beginning
to the previous command
to check the ALU negative flag
to the end of a program
- 11. Multiple Choice
The instruction JUMP_NEGATIVE only jumps the program if ___
it jumps to the beginning
it's a jump back in the code
the ALU’s negative flag is set to true
it's a jump forward in the code
- 12. Multiple Choice
Computers need to be told when to stop processing, so we need a ___
TERMINAL instruction
CUTOFF instruction
END instruction
HALT instruction
- 13. Multiple Choice
When a program runs forever, and never hits a HALT instruction, it's called ___
bottomless code
a never-ending computation
an infinite loop
a conditional jump
- 14. Multiple Choice
To break out of an infinite loop, what kind of instruction was used?
a conditional jump
a syntax error
a logical error
a HALT instruction
- 15. Multiple Choice
JUMP_NEGATIVE and JUMP IF EQUAL are examples of ___
a conditional jump
an explicit jump
a halt instruction
an explicit instruction
- 16. Multiple Choice
For the instruction JUMP_NEGATIVE 5, the CPU executes the jump to memory location 5 only if ___
the ALU's negative flag is false
the ALU's negative flag is true
it precedes a HALT instuction
location 5 holds a negative value
- 17. Multiple Choice
What new functionality was created by software rather than by the hardware of the ALU?
adding two numbers
subtracting two numbers
dividing two numbers
negative sums
- 18. Multiple Choice
What is the maximum number of instructions when using 4 bit operation codes?
4
8
16
32
- 19. Multiple Choice
In order to incorporate more instructions, modern CPUs use large instruction lengths, as well as ___
defined length instructions
more registers
more RAM
variable length instructions
- 20. Multiple Choice
In 1971, who released the 4004 processor, the first CPU put all into a single chip?
HP
AMD
IBM
Intel
- 21. Multiple Choice
How many instructions were supported by Intel's 4004 processor, the first CPU put all into a single chip?
8
16
32
46
- 22. Multiple Choice
The Intel Core i7 has thousands of different instructions and instruction variants, ranging from one to ___
15 bits long
32 bits long
15 bytes long
32 bytes long
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