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INTRODUCTION TO
COMPUTER
SLIDE 02
What is Computer?
A computer is an electronic machine that accepts
data, stores and processes data into information.
The computer is able to work because there are
instructions in its memory directing it.
A computer is an Electronic machine which gives
input and gets output.
What is deference between
Machine and Device?
An apparatus which are use mechanical power and
having several parts called machine, every device
is machine but every machine is not device
because device are those machines which are
portable chargeable having internal capacity of
power.
What is difference between
Electrical machine and Electronics
machine?
Electrical machines those machines consume high
voltage to operate.
Eg: Water Pump, Freezer, Air conditioner etc.
Electronics machines those machines consume low
voltage to operate.
Eg: Mobile Phone, Computer, laptop, etc.
What is difference between
Alternative current and Direct
current?
The Alternative Current is a current that cannot
store and we can generate it using generator and
Power House their frequency changes with
respect to time.
The Direct Current is a currentthat can store easily
in batteries and then use it we can convert
Alternative current into direct current and direct
current into alternative current by using rectifier
and uninterruptible power supply (UPS).
Basic Peripheral devices
monitor
Keyboard
mouse
CPU
Intro to Computers: Input, Output, Power Types
Intro to Computers: Input, Output, Power Types

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Intro to Computers: Input, Output, Power Types

  • 2. What is Computer? A computer is an electronic machine that accepts data, stores and processes data into information. The computer is able to work because there are instructions in its memory directing it. A computer is an Electronic machine which gives input and gets output.
  • 3.
  • 4. What is deference between Machine and Device? An apparatus which are use mechanical power and having several parts called machine, every device is machine but every machine is not device because device are those machines which are portable chargeable having internal capacity of power.
  • 5.
  • 6.
  • 7. What is difference between Electrical machine and Electronics machine? Electrical machines those machines consume high voltage to operate. Eg: Water Pump, Freezer, Air conditioner etc. Electronics machines those machines consume low voltage to operate. Eg: Mobile Phone, Computer, laptop, etc.
  • 8. What is difference between Alternative current and Direct current? The Alternative Current is a current that cannot store and we can generate it using generator and Power House their frequency changes with respect to time. The Direct Current is a currentthat can store easily in batteries and then use it we can convert Alternative current into direct current and direct current into alternative current by using rectifier and uninterruptible power supply (UPS).