Flashcards
Computer Science
Flashcards do conjunto (21)
- 1What does the embedded system do?Used as control system which monitor and control machinery
- 2List 3 things about embedded system?Single Tasks
Cheaper to produce
More efficient than general purpose computer - 3What does power supply do?Supplies power to motherboard and other hardware
- 4What is the job of a case cooling fan?Extracts hot air from the computer case
- 5What does CPU heat sink and cooling fan do?Keeps the CPU at a steady temperature
- 6What does the CPU do?Does all the processing
- 7What reads/writes optical disks?Optical drive
- 8What is the main circuit board called?Motherboard
- 9What is Hard Disk Drive (HDD)?Internal secondary storage
- 10What is the processing power of CPU?The processing power of CPU depends on clock speed,number of cores and cache size
- 11What has the overall control of the CPU?The Control Unit
- 12What the main job of The Control Unit?The main job of The Control Unit is to execute program instruction by following the fetch-decode-execute cycle.
- 13What controls the flow of data inside or outside the CPU?The Control Unit
- 14What kind of calculation does The Arithmetic Logic Unit do?It completes simple addition and subtraction
Compares the size of numbers
Do multiplication and division using repeated addition and subtraction - 15List all the logic operations which the ALU performs?AND,OR AND NOT and binary shifts
- 16What does the ALU contain?It contains the accumulator register
- 17What is a cache?The cache is a very fast memory in the CPU. Slower than registers but faster than RAM
- 18What does the cache do and why?Stores regulary used data so CPU can access quickly when needed next time.
- 19How does the cache work?CPU requests data, it checks the cache first to see if data is there. If not, it will fetch from RAM
- 20List all type of cache memory?L1, L2 and L3
- 21Cache have a very low capacity and are expensive compare to what?RAM and secondary data
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- FlashCards sobre Computer Science, criado por Qaisar Abbas em 05-11-2018.
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- Qaisar Abbas
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