this ppt describes about the software , hardware and networking concepts of a computer.

2. SOFTWARE
WHAT IS SOFTWARE ?
IT IS A SET OF PROGRAMS, WHICH IS DESIGNED TO PERFORM WELL DEFINED
FUNCTION. A PROGRAM IS A SEQUENCE OF INSTRUCTION
TYPES
FEATURES

3. TYPES
SYSTEM SOFTWARE
• PREPARED BY COMPUTER
MANUFACTURERS
• INTERFACE BETWEEN HARDWARE
AND USER
APPLICATION SOFTWARE
• PREPARED IN LAB
• PARTICULAR NEED OF A PARTICULAR
ENVIRONMENT

4. FEATURES
SYSTEM SOFTWARE
FAST IN SPEED
DIFFICULT TO DESIGN
DIFFICULT TO UNDERSTAND
LESS INTERACTIVE
SMALL IN SIZE
DIFFICULT TO MANIPULATE
WRITTEN IN LOW LEVEL LANGUAGE

5. FEATURES
APPLICATION SOFTWARE
CLOSE TO USER
EASY TO DESIGN
MORE INTERACTIVE
SLOW IN SPEED
WRITTEN IN HIGH LEVEL LANGUAGE
EASY TO UNDERSTAND
EASY TO MANIPULATE

6. HARDWARE
WHAT IS ?
INPUT DEVICES
OUTPUT DEVICES
MOTHER BOARD
CPU
MEMORY
RAM

7.  INPUT DEVICES
Key board
Mouse
Joystick
 OUTPUT DEVICES
Monitor
Printer

8.  MOTHER BOARD
serves as a single platform to connect all parts of computer together .It connects CPU ,
MEMORY , HARD DRIVES , etc directly or via cables . Also known as BACKBONE of a computer .
FEATURES :
Normally it supports a single type of CPU
Video cards , hard disk , sound cards have to compatible to function properly.
POPULAR MANUFACTURERS :
o Intel
o Asus
o Abit
o Gigabyte

9.  CENTRAL PROCESSING UNIT [ CPU ]
CPU is considered as the brain of the computer and it performs all types of data processing
operations . It controls the operation of all parts of computer .
CPU itself has the following three components :
 Memory unit
 Control unit
 ALU

10.  RAM
It is the internal memory of the CPU for storing data, program and program result . It is read/write
memory which stores data until the machine is working . As soon as the machine is switched off,
data is erased.
TYPES OF RAM
 Static RAM SRAM
 Dynamic RAM DRAM

11. NETWORKING
WHAT IS A COMPUTER NETWORK ?
IT IS A SYSTEM IN WHICH MULTIPLE COMPUTER ARE CONNECTED EACH OTHER TO SHARE
INFORMATION AND RESOURCES
CHARACTERISTICS OF A COMPUTER NETWORK :
i. SHARE RESOURCES FROM ONE COMPUTER TO ANOTHER
ii. CREATE FILES AND STORE FROM ONE COMPUTER TO ANOTHER
iii. CONNECT A PRINTER , SCANNER TO ONE COMPUTER WITH THE NETWORK AND LET
OTHER COMPUTER ALSO USE THE RESOURCE

12.  LIST OF HARDWARE REQUIRED TO SETUP A COMPUTER NETWORK :

13.  COMPUTER NETWORK TYPES
Personal Area Network Local Area Network
Metropolitan Area Network. Wide Area Network

14. JAVADEVELOPED : SUN MICRO SYS
LATEST EDITION : JAVA SE 8
FOUNDED : JAMES GOSLING
FEATURES :
SECURE ARCHITECTURE- NEUTRAL
PORTABLE INTERPRETED
ROBUST HIGH PERFORMANCE
MULTITHREADED DISTRIBUTED
DYNAMIC

15.  OBJECT ORIENTED PROGRAMMING :
 Object
 Class
 Inheritance
 Polymorphism
 Abstraction
 Encapsulation