11770364
Description
Mind Map by Khang Duong, updated more than 1 year ago
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Created by Khang Duong
about 7 years ago
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1.2 Memory
- SSD (solid state drive)
- Solid storage media
with no moving
parts or a device
that uses flash
memory.
- Solid storage media
with no moving
parts or a device
that uses flash
memory.
- RAM (Random access memory)
- RAM is non volatile as it erases data when
turned off and it holds data and information
currently used by the CPU.
- RAM is non volatile as it erases data when
turned off and it holds data and information
currently used by the CPU.
- Cache
- Cache is a hardware or software component
that stores data to make the CPU execute
instructions and data faster.
- Cache is a hardware or software component
that stores data to make the CPU execute
instructions and data faster.
- Flash Memory
- A kind of memory that
stores data without a use
of power.
- A kind of memory that
stores data without a use
of power.
- Virtual
Memory
- Virtual memory is
simulated memory that is
written to a file on a hard
drive that appears to exist
as RAM but is secondary
storage
- Virtual memory is
simulated memory that is
written to a file on a hard
drive that appears to exist
as RAM but is secondary
storage
- ROM (Read Only Memory)
- ROM is volatile and is not erased. It is
permanently on the ROM chip and holds the
start up system and the bootstrap loader.
- ROM is volatile and is not erased. It is
permanently on the ROM chip and holds the
start up system and the bootstrap loader.
- Registers
- MAR (Memory
address register)
copies and
transfers the
data on the PC
(program
counter) through
the address bus.
- PC (Program counter) is where
the next instruction is held in
the processor.
- MDR/MBR (Memory
Data/Buffer Register) is
where data and
instructions are held to
be executed.
- CIR (Current Information
Register) is where the
information from the MDR
is held after it has been
executed.
- MAR (Memory
address register)
copies and
transfers the
data on the PC
(program
counter) through
the address bus.
- POST (Power On Self-Test)
BIOS Chip performs checks
to make sure components
are present in the system
and when it is completed it
boots up system but if it
fails, it displays error
message.
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