Memory VOLATILE
Only stores information to run programs while the PC is off. Don`t requires electricity to store data using transistors and capacitor
Retains data even when the computer is off. Examples in old computers: paper, punched tape and floppy disks
Only stores information to run programs while the PC is on. Reset when the PC is turned off. Requires electricity to store data using transistors and capacitor
Don`t retain data even when the computer is on. Examples in old computers: paper, punched tape and floppy disks
Memory NON-VOLITILE
Reset when the PC is turned off.
Requires electricity to store data using transistors and capacitors
Retains data even when the computer is on.
Latency is the time for components to
Bridges
is the area where the computer stores or remembers data.
Manage how data and instructions are transferred between devices
provides the CPU with its instructions.
Primary storage
Cores
Manage how data and instructions are transferred
is the time for components to respond to a request
communicate through channels therefore doubling cores does not double speed
Retains data even when the computer is off.
Memory
Executes programs using the fetch-decode-execute cycle
Used to access the performance of a computer.
Examples Registers, cache, RAM, ROM and Virtual
Stores program operations and data while the program is being executed. Memory
Storage means
Renders images, frees up the CPU for other tasks
Retain programs and files long term, even when not in use.
executes programs using the fetch-decode-execute cycle
Benchmarking means
A test used to access the performance of a computer. Different types of software are used depending on the computers purpose.
Stores program, operations and data while the program is being executed.
Registers, cache, RAM, ROM and Virtual Memory
CPU speed (cycles per second)
Computers require an input hardware, processing hardware and output hardware.
CPU speed (cycles per second) measured in .............................
Gigabytes
ROM
RAM
Hertz
Factors that affect CPU performance are
Processor type, cache, clock speed
Processor type and cache
Processor type and clock speed
Only cache
Cache is a small amount of memory which is a part of the CPU - closer to the CPU than RAM. It is used to temporarily hold instructions and data that the CPU is likely to reuse.
The CPU control unit checks the -------------------- for instructions before the RAM.
Operating system
Clock
Cache
Larger the Cache =
indicates how fast the CPU can run.
determines how many instruction cycles the CPU can deal with in a second.
less data can be stored closer to the CPU
more data can be stored closer to the CPU
The clock speed - also known as clock rate -
depends on the size of the cache
stores programs, data and instructions.
allows the communication between devices
Clock speed is measured in megahertz (mHz) or gigahertz (gHz)
Clock speed is measured in megahertz (mHz) or gigahertz (gHz) and corresponds with how many instruction cycles the CPU .
CPU can contain one or more processing units also known as
cores
benchmark
Risc
Sisc
Grapnics bus PCI Express is
a test used to access the performance of a computer.
used to render images, frees up the CPU for other tasks
to store programs andfiles long term, even when not in use.
RISC stands for
Random information set comunication
ROM instruction safe comunication
Risk information safe computing
Reduced Instruction set computing
CISC
CPU information same compound
Computing information same complex
Computing instructions set coprocessor
Complex Instruction set computing
CISC is
used by all laptops/desktops
used by most laptops/desktops - made by Intel/AMD
used by all laptops/desktops/smartphones and tabets
used only in smartphones and tabets
RISC is
used in tablets/smartphones
used in all devices
used only in laptops
