2. What is hardware?
HARDWARE IS THE PHYSICAL COMPONENT OF
A COMPUTER SYSTEM. IT REFERS TO THE
ELECTRICAL PARTS AND DEVICES THAT MAKE
UP A COMPUTER.
Generally, hardware is categorized according to
the five basic operation
it performs:
Input devices (we use to send data to computer
processor/memory)
Processors (fetch, decode and execute data into
information)
memory (it holds data/instructions that CPU
needs)
Output devices (display information/results)
Secondary storage devices (Store
data/information for later use)
4. PROCESSOR
THE DEVICE THAT INTERPRETS AND
EXECUTESINSTRUCTIONS. ALSO CALLED
THE MICROPROCESSOR.
It is called the brain of the computer,
The faster the speed of the processor, the
faster the execution of instructions.
6. Hardware components
An input device lets you communicate with a
computer. You can use input devices to enter
information and issue commands.
An output device displays information on a
screen, creates printed copies or generates
sound.
The system unit is the part of the computer which
is responsible for accepting and processing the
data brought in by the input devices
12. SCANNER
A scanner allows you to scan documents
,pictures , or graphics and view them on the
computer.
Microphone
Used to input sound into a
computer
14. Printers
an output device that produces text
and graphics on paper
Monitor
The monitor is used to
provide soft copy output.
15. Speaker
Play sounds transmitted as electrical signals
from the sound card.
Projector
is a type of video projector for displaying video,
images or computer data on a screen or other flat
surface
17. Motherboard
The motherboard is the main circuit board
of a microcomputer. It is also known as the
mainboard or system board
18. IDE
stands for Integrated Device
Electronics. is a standard
electronic interface used between
a
Computer motherboard and the
computer's disk
storage devices
Hard-Disk Drive
is a storage device that store
billons of characters of data
on a nonremovable disk
19.
20. What is memory?
In computing, memory refers to the physical
devices used to store programs (sequences of
instructions) or data. i.e. Text, Images, Videos
etc.
Computer memory is the storage space in
computer where data is to be processed and
instructions required for processing are
stored.
Memory is of three types
Cache Memory
Primary Memory/Main Memory
Secondary Memory
21. Memory
The memory in a computer system is of two
fundamental types: The main/primary memory
and the secondary memory.
PRMARY MEMORY SECONDARY
MEMORY
RAM
ROM
22. Random Access Memory (RAM)
RAM is a volatile memory, where stored
information is lost if computer is turn off.
23. Read Only Memory (ROM)
The other major function of the BIOS is to
identify the boot device (CD-ROM, floppy disk
or hard disk) and transfer the operating
system code to RAM.
It contains information about its hardware
devices.
It is faster
24. Used to stores and
retrieves
information
on a floppy disk.
Floppy Disk Drive
is a device that reads
information stored on a
compact disc, it is a
storage device that use
laser technology to read
data from optical disks
CD/DVD Drive
25. Video
Card
Sound
Cardis a board that is plugged into
a computer to give it display
capabilities
enhances the computers sound
generating
capabilities by allowing sound
be
output through speakers.
26. Modem
A modem is a device that
sends and receives data
over telephone lines to and
from computers.
27. Power Supply
it supplies power from the power
supply to the drive. The power cables
are red, yellow and black. The yellow
wire furnishes 12 volts of power, the
red wire furnishes 5 volts of power,