2. What is a Computer?
The computer is an electronic device which is
developed by Charles Babbage in nearly the 19th
century. It takes input data from the input devices
stores and processed it and produces output.
Input Process Output
3.
4. Components of computer
• Hardware
Input devices
Output devices
Storage devices
CPU
• Software
Application software
System software
5. Characteristics or
capabilities of computer
• Speed - A computer works with much higher
speed and accuracy compared to humans
while performing mathematical calculations.
Computers can process millions (1,000,000)
of instructions per second. The time taken by
computers for their operations is
microseconds and nanoseconds.
• Accuracy - Computers perform calculations
with 100% accuracy. Errors may occur due
to data inconsistency or inaccuracy.
6. • Storage - The Computer has an in-built
memory where it can store a large amount
of data. You can also store data in
secondary storage devices such as floppies,
which can be kept outside your computer
and can be carried to other computers.
• Quick Decision - The computer does its
work as soon as you give instructions to the
computer, the computer starts executing the
instruction.
• Reliability - is the quality due to which the
user can stay dependable on the computer.
Computers systems are well-adjusted to do
repetitive tasks.
7. Limitations of Computer
• Lack of Common-Sense - Common sense is also
the major limitation of the computer, as you all
would know that a computer works on the
instructions of humans. A computer is designed in
such a way that it works only on logic and not on
common sense.
• No IQ - No IQ is also one of the basic computer
limitations. No IQ means that the computer does
not have brains like humans. Simply say that
computer systems do not have the ability to think
and understand.
• No Feelings - Emotion or feelings is also one
limitation of a computer. We are not computers
like humans because computers are machines.
8. • Computers Can’t Decide - Like us
humans, computers do not have the ability
to make decisions. In these cases, human is
ahead of the computer. Computer systems
only work on logic, not on judgment.
• Computers Can’t Think - A computer is a
machine, so the computer cannot think like
us humans and the computer does not do
any work by thinking because the computer
does not have the ability to think.
