Flashcards
mid-year flashcards
Cards in this deck (13)
- 1describe the fetch, decode, execute cycle1)The processor checks the program counter to see which instruction to run next
2)the program counter gives an address value in the memory of where the next instruction is
3)the processor retrieves the instruction value from this memory location
4)the instruction is the decoded (could involve the ALU or multiple registers
5)The instruction is the carried out
6)repeat - 2how does cache size affect the performance of the CPU?data is transfered faster which makes the CPU more efficient
it is faster to transfer to and from the cache than the RAM - 3does RAM or RAM store the BOOT sequence?ROM
- 4describe what happens when audio is recordedthe height of the wave is measured (sampled) at regular intervals
turned into/stored as binary - 5what would performing a 2 place shift d to a binary number?it would times the number by 4
loss of accuracy - 6why is secondary storage needed?so that memory is not deleted when the device is switched off
- 7how MB in 1GB?1000
- 8describe a LAN (local area network)small geographical distance (same building/house)
- 9describe WAN (wide area network)Normally a system of LANs and spans a large geographical area
- 10what does the MAR do?stores the address/location where the data will be fetched
- 11What does the MDR do?stores the data/instruction that is fetched from memory
- 12what does the program counter do?helps the control unit keep track of which line in the program it is at
- 13what does the accumulator do?on the ALU which is used to add up numbers
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- Flashcards on mid-year flashcards, created by Naomi Meeks on 02/03/2020.
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- Naomi Meeks
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