Operating systems: Computer arcutecture and memory

computer memory that can be accessed randomly, allowing data to be read and written in any order.

define RAM (Random access memory)

volatile memory. the content is lost.

how is RAM data dandled when power is removed?

stores each bit of data in a separate capacitor within an integrated circuit.

how does DRAM (Dynamic RAM) bits?

performs arithmetic and logical operations on data.

how does the ALU (Arithmetic logic unit) work"?

execute instructions, process data, preform calculations, and manage tasks across the system.

what is the job of the CPU ( central processing unit)?

brain of the computer

what is the CPU also known as?

ALU, registers, Control unit

what are the 3 parts the CPU is made of?

instruction is retrieved form memory

process of fetch?

instruction is separated into units

process of decode?

ALU retrieves operands and executes the instruction

process of execute?

synchronous the memory access to the cpu clock for faster data transfer

what is SDRAM ( synchronous DRAM)?

storage location that holds data most that has a high chance of being used again so that it can be retrieved faster.

define cache?

Cache is cost efficient.

cost of cache?

NAND based memory.

what type of memory does SSD (Solid state drive) use?

non volatile, content is kept.

how does SSD keep data when power is off?

expensive

cost of SSD?

none

how many moving parts do SSDs have?

refreshes thousands of times per second to retain data

why does DRAM need to be refreshed?

less circuitry

how much circuitry does DRAM have?

slower

how does DRAM compare in speed?

cheaper

How much is DRAM in cost?

non volatile memory. the content is kept.

How does ROM (Read only memory) handle data when power is lost?

storing firmware and system software

what is ROM mostly used for?

more circuits

how much circuitry does SRAM (static RAM) use"?

uses flip flops to represent a bit

how does SRAM (static RAM) represent bits?

does not need refreshing

does SRAM need refreshing?