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The fundamentals of computer renew


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Fundamentals if computer for Begining with contents of Hardware.

Fundamentals if computer for Begining with contents of Hardware.

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  • 1.  Computer is an electronic device that stores, retrieves, and processes data, and can be programmed with instructions. A computer is composed of Hardware and Software.
  • 2.  A computer provides three basic benefits:  Speed: Computers work at very high speeds and are much faster than human.  Accuracy: Computers rarely make mistakes. In fact, most computer errors are caused by human faults.  Diligence: Unlike humans, computers simply do not get board or tired.
  • 3. INPUT  PROCESSING  OUTPUT Processing Input output 10 + 20 = 30 (Data) (Information)Searching
  • 5.  MOUSE :- A Mouse is an input device There are many types of mouse like Optical Mouse and Ball Mouse.  Ball Mouse Optical Mouse
  • 6.  The Keyboard is a input device. This is a components that closely resemble a typewriter console. The keyboard provides different keys to perform various operations.
  • 7.  Data that has been processed needs to be displayed to the user. This is done using the monitor or the VDU. The VDU is similar to a TV screen and can display both text and graphic images. The display can be either in black & white or color.  CRT Monitor LCD Monitor Cethord Ray Tube Liqued Cristal Display
  • 8.  Printer is a output device. Using the printer, you can obtain output on paper. The printers commonly used with the, ink-jet and the laser printer.
  • 9.  A Microphone is an input device that allows a user to speak to the computer to enter data and instructions into the computer or it is used to record sound.
  • 10.  A joystick is a pointing device with a vertical lever mounted on a base. It is mainly used for computer games and ultrasound scanners in hospitals.
  • 11.  A scanner is a input device used to capture information, such as, photographs and documents on paper and translate the information into a raster (bitmap) computer image.
  • 12.  You can use speaker on a multimedia machine to listen to the sound files, which can be audio, recorded by a microphone or audio CDs.
  • 13.  Motherboard :- The System Unit is the one of the most important component of the System Unit. This is the Heart of the Computer.  CPU :- CPU is the Brain of the Computer and is placed inside the System Unit. There are many models of CPU like… I. Pentium I II. Pentium II III. Pentium III IV. Pentium IV
  • 14.  When you open the system unit, a large board containing of tiny electronic circuits components are visible. The components of the motherboard are. I. Chipset II. Microprocessor III. Clock chip IV. Rom chip V. Memory: RAM and ROM VI. Ports
  • 15.  The Data is stored in storage devices for processing data as well as for future references. There are two type of Storage Device.  Primary Storage Device :- The primary storage device for a computer is Random Access Memory (RAM).  Secondary Storage Device :- This is a permanently storage memory. Like 1. Hard Disk 2. Floppy Disk 3. Compact Disk (CD) 4. Pen drive 5. Memory Card
  • 16.  Components of the System Unit… ROM CHIP
  • 17.  The Internal power supply it called SMPS  SMPS convert the AC input into DC output.  SMPS provides cable connectors to supply the required voltage to other internal components like the Hard disk, CD drive and external device such as Keyboard and Mouse.
  • 18.  The SMPS has a small Fan, called Exhaust Fan, Its function is to cool the SMPS unit.
  • 19.  We have many Storage device in our computer like… I. FLOPPY DISK II. HARD DRIVE III. CD-ROM SYSTEM  These are permanently (Secondary) storage Device.
  • 20.  The internal memory of a PC is present on the motherboard in the form of chips. The computer used two types of internal memory. I. RAM (Random Access Memory) II. ROM (Read Only Memory)  RAM :-This is the memory that the computer use for storing the programs and their data while working on them. So, if you are drafting a latter using a word processor, such as MS WORD, you are working with a document loaded into the RAM.
  • 21.  Floppy disk is a storage device, this is a secondary storage device. This is a non- volatile memory.  Floppy Disks come in two sizes. Its covered with a square protective jacket.
  • 22.  The Hard Disk is collection of the disk known as platters. Hard disk located inside the system unit.  Hard disk is a non-volatile memory.  The hard disk is a high storage capacity disk and is permanently placed inside the system unit.
  • 23.  CD-ROM (Compact Disk Read Only Memory) is a very popular storage medium. This is a secondary storage device. To read a CD, you need an input device called CD-ROM drive. You can make the data CD, photo CD, Video CD.
  • 24.  A Computer uses its software to store, process, and retrieve information. Computer software can be divided into two types, I. Application Software II. System software  Application software refers to the software that enables user to perform specific task. For example, MS Word is used to create and edit document.  System software refers to the software that enables a computer to function. For example, Windows operating system.
  • 25. These are other helpful tools Cut: This is used to cut things out of your project Copy: this is used to copy from one portion of your project to another Paste: When you cut or copy something from your project, it is put on an “imaginary” clipboard. The paste button retrieves it from the clipboard and places it in your project