hardware
- Created by: cal14
- Created on: 08-02-18 09:13
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- hardware
- system arcitecture
- pc
- program counter
- holds the next instruction
- program counter
- mar
- memory address register
- holds the address where the data is
- memory address register
- acc
- accumilatour
- holds the results of calculations
- accumilatour
- mdr
- memory data register
- holds data from the memory
- memory data register
- alu
- arithmetic logic unit
- performes calculations
- arithmetic logic unit
- cpu
- has to fetch decode and execute instructions
- cache
- holds fragrantly used instructions
- cpu speed
- cache size
- how big the cahce is affects speed
- number of cores
- how many sets of the parts CPU it has
- clock speed
- how many instructions are done per second
- cache size
- pc
- memory
- rom
- reads only memory
- non volitile
- read only
- holds bios and bootstrap used in embedded systems
- reads only memory
- ram
- random acsess memory
- volitile
- read and wright
- holds os programs and data in use by the cpu
- random acsess memory
- flash
- non volitile
- read and write
- used as secondary storage in desktops and phones
- virtual memory
- this is space on a hard disk that is used as ram it is then transferred back to ram when it is being used
- rom
- storage
- magnetic
- hard disk drive (hdd)
- medium speed
- large capacity
- unlimited read write cycle
- tape
- slow
- very large capacity
- unlimited life span
- hard disk drive (hdd)
- solid state
- secure disk(sdcard)
- slow
- small -mid capacity
- small size
- cheap per gb
- ssd(solid state drive)
- fast
- expensive per gb
- limited read write cycles
- mid - large size
- secure disk(sdcard)
- optical
- cd
- slow
- small capacity
- medium size
- cheap
- dvd
- slow
- cheap per gb
- easy to break
- small
- blue ray
- cheap per gb
- slow
- medium capacity
- cd
- magnetic
- system arcitecture
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