digital computers

definition,digital meaning, history, characteristics ,types and uses of digital computers clear difference from analog computers.

1. Presented by : Saba Pervez Department : Bs -English 3 rd Submitted To: Ma^am Rabia

2. Digital computers

3. What is a digital computer?  Digital computers are programmable machines that use electronic technology to generate, store and process data. Two terms, positive "1" and non-positive "0," compose the data into a string . By convention, the digital computers use the binary number system, which has two digits: 0 and 1. A binary digit is called a bit.

4. T he most commonly used digital computer can be illustrated as ;

5. Invented by: John V. Atanasoff , an American mathematician and physicist, is credited with building  the first electronic digital computer , which he constructed from 1939 to 1942 with the assistance of his graduate student  Clifford E. Berry .    I t was used primarily for numerical computations and the discrete elements were the digits. From this application the term  digital  computer emerged.

6. Computer Architecture Computer Architecture is concerned with the structure and behaviour of the computer as seen by the user. Two basic types of computer architecture are: 1. Von Neumann architecture 2. Harvard architecture

7. 1. von Neumann architecture The   von Neumann architecture  describes a general framework, or structure, that a computer's hardware, programming, and data should follow. I t consists of following components; 1.RAM 2.ALU 3.control unit 4.peripheral devices

8. An example of computer architecture base on the V on Neumann architecture is the desktop  personal computer .

9. 2.  Harvard architecture The  Harvard architecture  uses physically separate  storage  and  signal pathways  for their instructions and data Microcontroller (single-chip microcomputer)-based computer systems and  DSP (Digital Signal Processor)-based computer systems are examples of Harvard architecture.

10. TYPES:

11. CHARACTERISTICS OF DIGITAL COMPUTERS Speed R eliable results H uge memory Fast calulations L ess electric power Less time consuming and unlimited scope Automatic

12. USES U sed in all field of life. C an do all sorts of calculations and makes our work easier.

13. references https:// www.britannica.com/technology/digital-computer https://www.javatpoint.com/digital-computers https:// www.slideshare.net/AnsifEk1/types-of-digital-computers https://www.studytonight.com/computer-architecture/digital-computers

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