Analog and Digital Computers

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Analog and Digital Computers

  1. 1. Difference between Analog and Digital Computers [Project in TLE3] Submitted by: Sheila Mae Basbas Amiel Seth Dexter Sacdalan
  2. 2. 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 .
  3. 3. What is an Analog Computer? <ul><li>- 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. </li></ul><ul><li>- In operation, analog computers contain a mathematical model of the problem. </li></ul>
  4. 4. Example of an Analog Computer Educational Analog Computer, introduced in 1960 by Heathkit.
  5. 5. What is a Digital Computer? <ul><li>A computer that stores data in terms of digits (numbers) and proceeds in discrete steps from one state to the next. </li></ul><ul><li>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. </li></ul>
  6. 6. Example of a Digital Computer <ul><li>Mainframe Digital Computer </li></ul>
  7. 7. What is the difference between Analog Computer and Digital Computer? <ul><li>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. </li></ul>
  8. 8. <ul><li>a n analog computer operates in </li></ul><ul><li>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. </li></ul>
  9. 9. Resources: <ul><li>http://www.google.com.ph/ </li></ul><ul><li>http://www.cds.caltech.edu/~hsauro/Analog.htm </li></ul><ul><li>http://pespmc1.vub.ac.be/ASC/DIGITA_COMPU.html </li></ul><ul><li>Submitted to: </li></ul><ul><li>Mr. Jenelou John Israel </li></ul>
  10. 10. The End Thank you!

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