Flashcards
ROM
Cards in this deck (20)
- 1ROM(Read-only memory) chipInformation is written when it manufactured.Cannot be erased or re-written and is obsolete.
- 2PROM(Programmable read-only memory)Information is written after it is manufactured. cannot be erased or re-written
- 3EPROM(Erasable programmable read-only memory)Information is written after manufactured.Can be erased with exposure UV light.
- 4EEPROM(Electrically erasable programmable read-only memory)Information is written after manufactured.Can be erased and re-written without having to remove the chip from the computer.
- 5NoteAll memory chips store data in the form of bytes.
- 6ByteIs a grouping of digital information and represents information such as letters, numbers, and symbols.
- 7Notelocated on the motherboard and other circuit boards and contain instructions that can be directly accessed by a CPU.
- 8InstructionsThe instructions stored in ROM include basic operation instructions such as booting the computer and loading the operating system.
- 9NoteROM chips retain their contents even when The computer is powered down.
The contents cannot be erased or changed easily. - 10NoteROM is sometimes called firmware. This is misleading, because firmware is actually the software that is stored in a ROM chip.
- 11Nonvolatilecontents are not erased when the computer is powered off.
- 12NoteMore RAM increases the memory capacity of the computer to hold and process programs and files.
- 13NoteLess RAM, a computer must swap data between RAM and the much slower hard drive.
- 14DRAM(Dynamic RAM)Constantly refreshed with pulses of electricity in order to maintain the data stored within the chip.
- 15SRAM(StaticRAM)Used as cache memory.faster than DRAM.Does not have to be refreshed as often .
- 16SDRAM(Synchronous DRAM)DRAM that operates in synchronization with the memory bus.the memory bus is data path between the CPU and the main memory.Control signals are used to coordinate the exchange of data between SDRAM and the CPU.
- 17DDR(Double Data Rate)transfers data twice as fast as SDRAM.DDR SDRAM increases performance by transferring data twice per clock cycle.
- 18Double Data Rate 2Improves performance over DDR SDRAM by decreasing noise and crosstalk between the single wires.
- 19DDR3(Double Data Rate 3)Less power and generates less heat.
- 20DDR4(Double Data Rate 4)Less power due using lower voltage and has advanced error correction features.
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- Flashcards on ROM, created by Nazleena Shaariin on 16/03/2018.
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- Nazleena Shaariin
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