Computer introduction
- 2. Learning objectives Computer Data and Information Characteristics of Computer Limitations of Computer Uses of Computer Computer Generations
- 3. Computer The word Computer came from Latin word which means compute. Dictionary defines "computer" as any programmable electronic device that can store, retrieve, and process data. A computer is an electronic device, operating under the control of instructions (software) stored in its own memory unit, that can accept data (input), manipulate data (process), and produce information (output) from the processing. Generally, the term is used to describe a collection of devices that function together as a system. The basic idea of computing develops in the 1200s
- 4. Data and information The activity of processing data using a computer is called data processing Data is a collection of facts an figures .it can be in the form of a text, numbers, images, audio, videos given to the computer during the input phase. Data after processing is called information. Information is data is organized, meaningful, and useful.
- 7. Limitations of Computer Dependency: Fully Dependent upon human beings. Lack of Intelligence :Computers do not have their own Intelligence and hence cannot think for example, a computer can create music but cannot tell its quality. In other words, computer has no brain. Lack of Detecting Errors :Computer can detect only syntax error, it cannot detect flaw or error in logic. Lack of Capability : It has no Capability to take any decision by itself, like a human being, it cannot judge by itself for any valid or non-valid data.
- 8. Limitations of Computer No I.Q. :A computer is not a magical device. It can only perform tasks that a human being can. The difference is that it performs these tasks with unthinkable speed and accuracy. It possesses no intelligence of its own. It I.Q. is zero, at least today. A computer cannot take its own decision in this regard. No Feelings : Computers have no feelings and no emotion because they are machine. Lack of Creativity and imagination :It does not have intuition and cannot draw conclusion without going through all the intermediate steps. Experience :Computers don't learn form experience.
- 9. Uses of Computer Computers in Daily Life Accounts Games Educational On-line banking Smart ID cards Supermarkets Working from home (Tele-working) Internet
- 10. Computer Generations “Generation "in computer talk is a step in technology. It provides a framework for the growth of computer industry Originally it was used to distinguish between various hardware technologies, but now it has been extended to include both hardware and software Till today, there are five computer generations