computer architecture Flashcards
state the name of the famous computer architecture system
von neumann architecture
what do buses do
they move data around the computer and send out control signals to synchronize internal operation
name three types of buses
address bus, data bus, control bus
what do the address buses do
they carry signals relating to the address between the processor and memory
what is the direction of address bus
uni-directional (operating in a single direction)
what do the data buses do
they send data between the processor, memory unit and the input/output devices
what is the direction of data bus
bi-directional (operating in both direction)
what do the control buses do
they carry signals relating to control and coordination of all activities within the computer
what is the direction of control bus
uni-directional
what are registers
high-speed storage areas within the computer
they are needed so that data can be manipulated within the computer
all data must be represented in a register before it can be processed
name five types of registers
memory address register (MAR) memory data register (MDR) program counter (PC) current instruction register (CIR) accumulator (ACC)
what is the memory unit made out of
address and contents
what will each address in memory unit identify
it will uniquely identify each location within the memory map
what does the control unit do
it controls the operation of the memory,processor, input/output devices
what does the control unit do with the instruction that it reads
it interprets them and sends out signals along the control bus to synchronize all computer components
