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Showing posts from July, 2011

Explain Parts of CPU and its Working

CENTRAL PROCESSING UNIT / CPU / Microprocessor / Processor Central processing unit is the brain of computer. It is also called CPU or processor . Processor is used to process data according to given instructions. It performs arithmetic and logical operations on data. Parts / Components of CPU / Processor on computergap.com It controls all activities of different parts of a computer . As brain in human body controls all other parts of body and takes decisions, CPU controls all other parts of the computer and their working. A CPU has three basic parts: Arithmetic Logic unit, Control unit and Registers. Parts of Microprocessor or Processor or CPU or Central Processing Unit computergap.com 1.    ARITHMETIC LOGIC UNIT (ALU) ALU performs data processing according to given instructions. All computations are done in this unit. ALU is the real place in computer where actual execution of instructions takes place. ALU may be further categorized into two sections acco

Explain Different Types Of Output Devices

Output devices Out put devices are used to display results of processing to the user. They perform the following functions:  Receive results from memory  Convert data into human readable form  Display results to the user Examples include: Monitor, printer, plotter, speaker, and multimedia projector. Different Types of Output Devices 1.    Monitor LCD Monitor CTR Monitor     Monitor is the most commonly used output device used to display results of processing. It has a TV like shape. Pictures on monitor are formed with picture elements called PIXEL. Monitors may be Monochrome that will display results in Black & White. Color Monitors are also available. They display results in multi colors. Monitor produces soft copy output. 2.    Printers Printers are used to produce hard copy out put. They print processing results on paper. Printers are divided into two main categories: ·    Impact Printers ·    Non Impact printers Impact Printers.

What are Different Types of Input Devices With Examples

Topic: Different types of input devices of a computer system with examples, pictures and explanation:  Topics Covered are: Definition of Input Devices Functions of Input Devices ( How input devices work? ) Examples of Input Devices Pictures / Images of different input devices Different Examples of Input Devices With Description Keybboard Mouse Trach Ball Trackpad Joy Stick Light Pen Microphone Scanner Graphic Tablet ( Digitizer ) Digital Camera Touch Screen ( I/O Device / Dual Device - Perform Both Functions input + Output ) INPUT DEVICES ( Definition ) Input devices are used to enter data and instructions into computer memory from external world. Input Device is a hardware part of the computer that is used to enter data and instructions into computer memory. The examples of input devices include: Keyboard, Mouse , Track ball, Track Pad, Joy stick, Touch Screen, Light pen,   Scanner , Digital Camera, Microphone, Graphics tablet etc. They (inpu

What are Different Types of Computer Hardware

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

Differentiate between Analog and Digital Computers

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

Uses Of Computer In Industry

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

Uses Of Computer in Medical Field

Today Computers are an essential part of an hospital . Doctors and administration staff uses computers to manage patient history and medicine stocks etc. Computers play a key role in the medical field .  Their uses include storing patient related data, housing knowledge bases, providing the logic and circuitry for medical equipment, scanning and imaging the body, and facilitating speedy communications. Computers can be used in medical field in the following ways: Uses of Computers in Medical Field Top Seven Uses of Computers in Medical Field    Hospital Administration These days, Computers are being used in hospitals extensively . We can computerize the accounting, payroll and stock system of the hospital. We can keep the record of different medicines.  Recording Medical History Of Patients Computer can be used to store the medical history of the patients . Medical history is very important for patients as well as doctors. Doctors may better prescribe th