Perfect Computer Notes

What is Hardware? The physical parts of a computer are called hardware. Hardware can be touched or seen by us. For example, hard disk, mouse, keyboard, CD, CD-ROM Drive, Floppy Disk, Speakers, Modem and Printers - all are computer hardware. Explain different types of computer hardware Different types of hardware components on the basis of the functionality  they provide are as follows: 1.    Input devices Input devices are used to enter data and instructions into computer. Examples of input devices are: Keyboard, mouse, scanner, digital camera etc. Microphone Mouse Keyboard 2.    The Central Processing unit Central processing unit is the brain of the computer . It is also called CPU or Processor. Intel is the leading manufacturer of microprocessors. For example, Intel Pentium IV 3.2 MHz is an example of a CPU. You can see the images of processors / Micro processors or CPUs. Images of CPU or Microprocessor or simply Processor 3.    Output de

The differences between analog and digital computers are as follows: Analog Computers Digital Computers 1 Analog Computers Work on continuous values. Digital computers Work on discrete values. 2 Analog Computers have low memory . Digital computers have a very large memory 3 Analog computers have Slow speed. Digital computers have fast speed. 4 Analog computers are less reliable. Digital computers are more reliable. 5 Analog computers used in engineering and science and medical fields. Digital computers are used in all fields of life. 6 Analog computers are used to calculate / measure analog quantities like speed and temperature. Digital computers are used to calculate math

Computers are used in industry in different types of systems. Computer-Controlled Robots are Used in Industry Computer-controlled robots are used to perform many complicated jobs in industry. Robots are computer controlled programmable machines. They can perform mechanical jobs, too, like pick and place different parts, welding or painting cars etc. Different Uses of Computers in Industry  Automated Production Systems Today, computer-controlled robots are used to assemble cars. No doubt, these systems work faster than human beings. Another popular and efficient use for computer controlled robots is in the field of spray painting. The consistency and repeatability of a robot's motion have enabled near perfect quality painting while at the same time wasting no paint and leaving no place without paint. Uses of computers in industry area     Perhaps the most popular applications of robots are in industrial welding. The repeat-ability, uniformity in quality, a