This document provides an overview of a seminar on computer hardware and servicing given by Harikrishnan U. It defines computer hardware as the physical parts of a computer system including machinery and equipment. It then lists and describes common computer components like the central processing unit, motherboard, memory, input devices, output devices, floppy drives, and hard disks. For each topic, it provides details on what the component is, examples, parts, speeds, capacities and other specifications. The overall summary is a seminar that defines computer hardware and describes the main internal and external components of a computer system.

1. NAME : HARIKRISHNAN U
DEPT : III - DCE
Seminar
On
Computer Hardware
And servicing

2. CONTENT
 What is Computer Hardware?
 Components of Computer
 Computer Input Devices
 Computer Output Devices
 The Central Processing Unit
 Motherboard
 Computer Memory
 Floppy Drive
 Hard Disks

3. WHAT IS COMPUTER HARDWARE?
 Computer Hardware
is the physical part of
the computer
system, the
machinery and
equipment.

4. COMPONENTS OF COMPUTER

5. COMPUTER INPUT DEVICES
 Computer Devices
that input
information in the
computer
Examples
 Key Board
 Mouse
 Scanner
 Digital Camera

6. COMPUTER OUTPUT DEVICES
 Computer Devices
that output
information from the
computer.
Examples
 Monitor
 Printer

7. THE CENTRAL PROCESSING UNIT
• CPU (Central Processing Unit) also called the
Microprocessor or “The Brain” of the
Computer.
• Processor speed: The speed at which a
microprocessor executes instructions. This is
usually measured in megahertz (MHz).
• Brands of Processors include:
Pentium
Celeron
MAC
AMD
Cyrix

8. PARTS OF CPU

9. MOTHERBOARD
 Here we see a
diagram and a
photo of a
motherboard (or
main circuit board).
This one is suitable
for a Pentium CPU
 Main circuit board
inside your
computer is called a
motherboard

10. COMPUTER MEMORY: (RAM)
 Before your CPU can process any
instructions you give it, those instructions
must be stored somewhere, in preparation
for access by the microprocessor
 The more memory that is available in a
machine, the more instructions and data
that can be stored at one time.

11. COMPUTER MEMORY: (RAM)
 If the computer does not have enough RAM to run
an application than pieces of the running
application will be stored on the Hard Drive
temporarily in a method known as “Virtual
Memory” and the CPU will then have to retrieve
information from the virtual memory causing a
bottleneck in the system.
 RAM is measured in bytes.

12. FLOPPY DRIVE
 Storage Devices -- "How it
saves data and
programs“
Hard disk drives are an
internal, higher capacity
drive which also stores the
operating system which runs
when you power on the
computer.-
"Floppy" disk drives allow
you to save work on small
disks and take the data with

13. FEATURES:- FLOPPY DISK
Diskettes (Floppy
Disks)
Speed:
Very slow!
Capacity:
Normally 1.44 Mbytes.
Cost:
Very cheap.

14. HARD DISKS
 Speed: Very fast!
The speed of a hard disk is
often quoted as "average
access time" speed,
measured in milliseconds.
The smaller this number the
faster the disk.
 Capacity:
Enormous! Often 40/80
Gigabytes. A Gigabyte is
equivalent to 1024
Megabytes.

15. THANKS