Topic 1: CPU Flashcards
1
Q
CPU (Central Processing Unit) / Processor
A
interpret and carries out basic instructions to operate a computer
2
Q
2 component in processor
A
- control unit - directs and coordinate most of the operations
- ALU (arithmetic logic unit) - perform arithmetic, comparisons and other operations
3
Q
machine cycle
A
- Fetching - CU obtain data and instruction from memory
- Decoding - CU decode instruction into signal that can be execute to ALU
- Executing - ALU carry out the instruction
- Storing - result store in memory
4
Q
System clock
A
control the timing of computer operations
Clock speed
- pace
- gigahertz (GHz)
5
Q
4 cooling method
A
- heat sink
- fan
- cooling liquid technologies
- cooling pad
6
Q
advantages of cloud computing
A
- accessibility
- space saving
- cost saving
- scalability
7
Q
2 types of signal in data representation
A
- analog - continuous and vary in strength and quality
- digital - on and off
8
Q
3 categories of item stored in memory
A
- data being processed and resulting information
- applications
- operating system and programs
9
Q
2 types of memory
A
- Volatile - content loss when power is removed (RAM)
- Non-volatile - content remain when power is removed (ROM, Flash memory)
10
Q
2 types of RAM
A
- dynamic
- static
11
Q
function of memory cache
A
speed processing time by storing frequently used data and instructions
12
Q
flash memory
A
can be erase electronically and rewritten
- CMOS technology use battery power to retain information
13
Q
Define access time
A
time taken by the processor to read from memory
- unit: nanoseconds
14
Q
4 access time terms
A
- milli - one-thousandth of a second
- micro - million
- nano - billion
- pico - trillion
15
Q
examples of adapter card
A
- MIDI
- bluetooth
- video card
- sound card
- USB
