An analog computer is a form of computer that operates on continuous data like temperature, pressure, speed, voltage etc. by measuring and comparing. It has low accuracy and usually contains no any or limited storage capacity. It is special purpose computer. It cannot be reprogrammed and can be operated only by skilled manpower. 'Presley' is an example of analog computer. Modern Analog computers are used today for some applications, such as scientific calculation, engineering design, industrial process control, and spacecraft navigation.
Digital Computer
Digital computer operates on discontinuous or discrete data by counting and calculation. It has higher accuracy an usually contains larger storage capacity. It is general purpose computer and can be reprogrammed. It can be operated by general users. Device like digital watch, digital speedometer, etc are the examples of digital devices. IBM PC, Dell Laptop, Acer notebook etc are the examples of digital computers.
Hybrid Computer
Hybrid computer is the combination of analog and digital computer. It can operate on both continuous and discrete data. It can convert analog data to digital and vice versa. In a hybrid computer, analog component is used for measuring and comparing, and digital component is used for controlling. Its storage varies from application area. Super computers are usually hybrid computer. It is special purpose computer and can be operated only by skilled manpower.
Major Application of hybrid computers are
- Weather forecasting
- Automated industry control
- Automated vehicles
- Rocket launching system
- Diagnosis in hospital
| Analog Computer | Digital Computer | |
Analog computer operates on continuous data like temperature,
pressure, speed, voltage, etc.
|
Digital computer operates on discontinuous or discrete data (0
and 1).
| |
It operates by measuring and comparing.
|
It operates by counting and calculation.
| |
It has low accuracy.
|
It has higher accuracy.
| |
It usually contains either no any or limited storage capacity.
|
It usually contains larger storage capacity.
| |
It is special purpose computer.
|
It is a general purpose computer.
| |
It cannot be reprogrammed.
|
It can be reprogrammed.
| |
It can be operated only by skilled manpower.
|
It can be operated by general users.
| |
Devices like thermometer, speedometer, pressure gauge,
voltmeter, etc. are the examples of analog devices.
|
Devices like digital watch, digital speedometer, etc. are the
examples of digital devices.
| |
‘Presley’ is an example of analog computer.
|
IBM desktop PC, Dell laptop, Acer notebook are the examples of
digital computers.
|
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