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Cards (17)
What does the ALU do after storing results?
It sends signals back to the
control unit
What is the primary function of the ALU?
To perform
mathematical
calculations and
logical
operations
Where does the ALU store the results of its operations?
Back into
registers
Why are arithmetic operations essential for the ALU?
They are crucial for
scientific simulations
and data analysis
What is the role of registers in relation to the ALU?
Store
data
temporarily
during
processing
Provide
quick access
to
data
for the
ALU
What is cache memory used for?
Speeds up access to
main memory
What does the Control Unit do in the CPU?
Directs
instruction
execution
What are general purpose computers designed for?
Variety of
uses
View source
How do general purpose computers differ from embedded systems?
Embedded systems perform limited tasks well
function without a user
View source
What components make computers work?
Hardware
,
software
, and
CPU
View source
What type of data can be stored in RAM?
Both
readable
and
writable
data
View source
Why is RAM considered easy to read and write?
It allows
quick access
to data
View source
Magnetic storage
HDD's
magnetic tapes
Uses
spinning disks
(
platters
)coted with magnetic mat
R/W head
moves across disk to store and retrieve data
Data is stored in tiny
magnetised
areas (
0s and 1s
Mags pros and cons
Large capacity at 1T plus
Cheaper per gb compared to
ssds
Slower cus of moving parts
Fragile
Uses are servers and comps
Optical storage
Cds DVD
Laser
burns tiny pits onto a
disc
It then reads reflection from these pits to retrieve
data
Pit
is 0
land
is 1
Op pros and cons
Cheap to make
Portable
Limited
capacity
Slow RW speeds compared to
hdds
and
ssds
Movie
and
games
Solid state storage
USB SSD
Uses flash memory with no moving parts
Very fast
More durable
Energy efficient
More expensive
Lim num of write cycles
Laptops phones
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