Analog and Digital ComputersPresentation Transcript
Difference between Analog and Digital Computers [Project in TLE3] Submitted by: Sheila Mae Basbas Amiel Seth Dexter Sacdalan
T here are two distinct families of computing device available to us today, the all pervasive digital computer and almost forgotten analog computer . These two types of computer operate on quite different principles .
What is an Analog Computer?
- a form of computer that uses the continuously-changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved.
- In operation, analog computers contain a mathematical model of the problem.
Example of an Analog Computer Educational Analog Computer, introduced in 1960 by Heathkit.
What is a Digital Computer?
A computer that stores data in terms of digits (numbers) and proceeds in discrete steps from one state to the next.
The states of a digital computer typically involve binary digits which may take the form of the presence or absence of magnetic markers in a storage medium, on-off switches or relays.
Example of a Digital Computer
Mainframe Digital Computer
What is the difference between Analog Computer and Digital Computer?
the digital computer represents data internally using a quite verbose but very robust form of representation called binary. Thus a single transistor in a digital computer can only store two states. Obviously to store a number to any sensible degree of precision, many transistors are required.
a n analog computer operates in
a completely opposite way to the digital computer. For a start, all operations in an analog computer are performed in parallel. Secondly, data are represented as voltages, a very compact but not necessarily robust form of storage. A single capacitor (equivalent to the digital computer’s use of a transistor) can represent one continuous variable.