comp sci rev Flashcards
what’s an overflow error ?
an overflow error is when the leftmost column produces a carry and the arithmetic result exceeds the available number of bits .
what type of computer architecture is used in most computers ?
von Neumann architecture
is RAM volatile or non-volatile ?
volatile
what’s ROM ?
Read only memory
what does RISC stand for ?
Reduced instruction set computer
what does CISC stand for ?
complex instruction set computer
what does FDE stand for?
Fetch, Decode, Execute
what are the 3 main types of secondary storage ?
solid state storage devices
Optical storage
Magnetic storage
what does a binary left shift have the effect of ?
multiplying the binary whole number by 2
what does a binary right shift have the effect of ?
dividing the binary whole number by 2
what does MAR stand for ?
Memory Address Register
what does MDR stand for ?
Memory Data Register
what is clock speed measured in ?
gigahertz
what is able to perform its own FDE cycle ?
each CPU core
what does overclocking a CPU do ?
increases the performance at the cost of increased temperatures
that does GPU stand for ?
Graphics processing Unit
what does CPU stand for ?
Central processing unit
is a monitor an input or output ?
output
what’s the three main factors for CPU performance ?
Cache memory
number of cores
Clock speed
what’s faster RAM or cache memory ?
cache memory
if you divide a binary number by 32 how many shifts to the right does it do ?
five shifts to the right
if you multiply a number by 32 how many shifts to the left does it do ?
five shifts to the left
What does the ALU do ?
Executes operations
