NAME – vivek singh . Class – VIII

WHAT IS COMPUTER ?

• A COMPUTER IS AN ELECTRONIC MACHINE . THAT CONVERT DATA INTO MEANINGFUL INFORMATION . IT CALCULATED THE ARITHMATICAL AND LOGICAL TASKS .

HOW MANY TYPES OF COMPUTER ?

• MAINLY THREE TYPES OF COMPUTER – 1.DIGITAL COMPUTER .2.ANALOG COMPUTER.3.HYBRID COMPUTER .

WHAT IS HARDWARE ?

• ALL THE PHISICAL COMPONENT OF THE COMPUTER SYSTEM , WE CAN SEE AND TOUCH IS CALLED HARDWARE ALL INPUT , OUTPUT , PROCESSING DEVICES , LOGICAL CIRCUITS ARE EXAMPLE OF HARDWARE .

WHAT IS SOFTWARE ?

• SOFTWARE IS A SET UP PROGRAM , WE CANNOT SEE AND TOUCH WE CAN FEEL IT CALLED SOFTWARE .

HOW MANY TYPES OF SOFTWARE ?

• TWO TYPES OF SOFTWARE :-1.SYSTEM SOFTWARE 2.APPLICATION

WHAT IS THE SMALLEST UNIT OF COMPUTER MEMORY ?

• BIT – 4BIT – 1NOBBLE - 8BIT – 1 BYTE - 1024 BYTE – 1 K.B - 1024 M.B – 1 G.B - 1024 G.B – 1 J.B

WHAT IS PERIPHERALS ?

• DEVICE ANY PEACE OF HARDWARE ATTACH TO THE COMPUTERIS CALLED PERIPHERALS . EXAMPLE –

• KEYBOARD • MOUSE • SPEAKER• P.D e.t.c

EXPLAIN THE DATA REPRESENTATION ?

1. BINARY NO. SYSTEM – 0 AND1 2. DECIMAL NO. SYSTEM – 0 TO 93. OCTAT NO. SYSTEM – 0 TO 7 4. HEXA DECIMAL NO. SYSTEM – 0 TO 9 , A TO F

WHAT IS COMPUTERT MEMORY ?

• COMPUTER MEMORY IS ONE OF THE IMPORTANT PART