hardware Flashcards
Physical components (internal or external) that are used in data management and logic comparisons, control functions, and computing information
hardware
hardware is _____ components
tangible
Types of hardware
internal and external
the most important part of hardware, sometimes referred to as the brain of the computer
Central processing unit (CPU)
CPU is also known as
central processor
Components of CPU
Control Unit (CU)
Arithmetic Logic Unit (ALU)
Primary Storage
Registers
decodes program instructions and directs other components of the computer to perform that task specified in the programs instructions
Control Unit(CU)
performs arithmetic and logical operations
Arithmetic Logic Unit (ALU)
Stores the program instructions currently being executed and also stores the data while being processed by the CPU
Primary Storage
Registers is a __ word read and write memory; special temporary storage which quickly accepts, stores and transfers data and instructions for immediate use
14
RAM stands for
Random Access Memory
types of internal hardware
CPU
Memory Unit
Input and Output Unit (I/O Unit)
it does not only store data and instructions before the execution but as well as the processed data
memory unit
refers to as main memory or primary memory
RAM
ROM stands for
Read Only Memory
enable the computer to perform basic operations such as its start up procedure
ROM
a volatile type of memory; can be read and altered by the computer
RAM
can be read by the computer but not altered (fixed)
ROM
types of external memory
hard drive
CD/CD ROM’s
Magnetic Floppy Disc
secondary memory is also known as
auxiliary memory
it is a non volatile type of memory that is responsible for keeping files permanently
secondary memory
two types of secondary memory
sequential storage (tapes)
direct-access storage devices (diskettes)
allows communication between the computer and its outside world via input and output devices
I/O Unit
it is an entity within a computer responsible for the control of one or more external devices
I/O Unit
the processing will be done internally with the ___ and ___
CPU, memory
hardware device designed to store information
storage device
2 types of storage device
primary storage - RAM
secondary storage - disks
data on storage devices are measured in
bits
bytes
kilobytes (KB)
megabytes (MB)
gigabytes (GB)
terabytes (TB)
measure of bits
10111010
measure of bytes
8 bits
measure of KB
1024 bytes
measure of MB
1 million bytes
measure of GB
billion bytes
measure of TB
trillion bytes
it is the slower and
cheaper form of memory
Secondary Storage
Secondary Storage is also called
secondary memory
CPU does not access the secondary memory directly.
The content in it must first be copied into the ____ for CPU to process.
primary storage RAM