A Micro Computers is a computer whose CPU is a Micro Processor.

a.                   Home Computer

·         Used widely for entertainment and training purposes

b.                  Personal Computer

·         Used widely in individual small business or office.

Output Unit

·         CPU sends electronic binary signal, which in need converted to human legible form by output units.

Example : Screen, Printer, Sound etc.

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HOW TO USE MS EXCEL

TABULATION

COPYING IT IN A CD

COPYING TO THE SYSTEM

USING OF INTERNET, EMAIL

Ctrl U – Underline

Ctrl C – Copy

Ctrl V – Paste

Ctrl U – Underline

Ctrl B – Bold

Ctrl P – Print

Ctrl I – italic

Click File – Open to open the existing document

SAVING A DOCUMENT

Click File – Click Save – name the document

CHECKING YOUR SPELLING

Click Tools – Spelling & Grammar

CHANGING MARGINS AND OTHER PAGE OPTIONS

Click File – Page Set up – Margin  = Change the size of paper / Margins

PRINTING AN OFFICE DOCUMENT

Click File – Print – Click current page / All Pages

EXITING AN APPLICATION

Click File – Close – To exit application

Click Start Button

• Programming was done in machine language
• Computers are large in size
• Programming was very difficult
• Used the concept of stored program

Second Generation

• Transistorizes circuitry began to advent
• Magnetic Disk Storage and RAM are invented
• Higher Level Languages are developed like Cobol, Fortan etc.
• Used for commercial purpose like pay roll, inventory control etc, as batch processing model.

Third Generation

• Introduced in 1964
• Integrated circuits (chip) are developed with Transistors, Resistors & Capacitors.
• Higher Speed, Longer Storage Capacities & Low Price

Fourth Generation

• Microprocessor are developed
• Large Scale of integrated circuits having about 50,000 transistors on single chip made possible.
• Microcomputer are developed

Fifth Generation

• Massive sum of money are being spent to develop Fifth Generation computer
• System with Human like manner

Computer

A Computer  is a fast and accurate electronic device or machine, used to accept data store data, process data and out put results. A computer always works under a program of instructions.

Monitor

Mouse

Keyboard

CPU

Components of Computer

1.                  Mother Board

2.                  Key Board

3.                  Monitor

4.                  Hard Disk

5.                  Floppy Drive

6.                  RAM

Features of Computer

• Speed
• Accuracy

Functions of a Computer

The Four main functions of computer are

• Accepting the data as input
• Storing the data in memory
• Process the data as per the instructions given
• Sends data to output.

Data

The Data are the information. It can be of type

• Numeric
• Alphabetic
• Alphanumeric

Data in Human Readable form

Convert Data in Binary Format

Computer

·         STARTING AN OFFICE

·         CREATING A NEW DOCUMENT

·         OPENING AN EXISTING DOCUMENT

·         SAVING A DOCUMENT

·         CHECKING YOUR SPELLING

·         CHANGING MARGINS AND OTHER PAGE OPTIONS

·         PRINTING AN OFFICE DOCUMENT

·         EXITING AN APPLICATION

·         GETTING HELP