Computer Concepts

Welcome to class!

In today’s class, we will be talking about the concepts of computer. Enjoy the class!

Input Devices: Computer related input devices are Keyboard, Mouse, Touch-pad, Track-point, Scanner, Microphone, Digital Cameras, Bar-code reader, Joystick, Webcam, etc.

Output Devices: Few examples of output devices are Printers, Projector, Plotters, Monitor, Speakers, Head Phone, etc.

Brief explanation of input devices

Keyboard:

A computer or laptop keyboard is kind of hardware device that you can use to type data in a computer system. It usually plugs and plays device. A computer keyboard includes a set of alphabets (A-Z), numbers (0-9), symbols and function keys. A computer keyboard type should be PS/2 (5-Pin DIN or 6-Pin DIN), USB (Universal Serial Bus), Wireless. Nowadays USB and Wireless keyboard are common in use. Earlier, PS/2 was the most used keyboard.

Mouse:

A computer mouse is input and hardware, pointing device that you can connect to your computer system. You can move the cursor on your screen. It’s a handheld device that you can move with your hand and do clicks (right or left) on your screen to send commands to your computer screen area. Earlier PS/2 mouse was in existence but nowadays USB and Wireless Mouse have taken place.

Touch-pad:

A touch-pad or track-pad is a kind of input device that has a limited area wherein you can Point, scroll, click and swipe. A Touch-pad most commonly found on computer laptops (computer brand doesn’t matter). The touchpad allows using all the features as you do with a computer mouse.

Scanner:

A scanner is an electronic and input device that allows user to scan any of document, images, etc. and convert them to digital formats that you can see on your computer screen. It’s a kind of hardware device that you can connect to your desktop computer/laptop by using a USB connection. Most uses in offices to create an image file of physical documents.

Digital Cameras:

A Digital Camera allows user to take pictures by using digital technology in cameras. You can click and take photographs/pictures of anything that you have focused. You can control it by its certain features.

Brief explanation of output devices

Printers:

A printer is an output device that can print any document, web page, photographs, etc by a command sent by your computer desktop or laptop. There are several brands and type of printers available for an example: Laser-jet, Office jet, Inkjet, Line printers. Nowadays most of the printers include the feature of scanner and copier.

Projector:

A projector is a hardware device that you can connect to computer desktop/laptop by using HDMI or VGA cable (depends compatibility) to protect your computer display on a large screen. If you are using a projector, you also required a projection screen where you can project the computer display.

Speakers:

Computer speaker is an output device because you are getting sound from it whenever you play any online or offline music, video or anything that has sound in it. A speaker is a hardware device that you can connect to your computer to generate sound.

Monitor:

In computing, a monitor screen is a computer display. A monitor could be a CRT, LED or LCD. Whatever you do in your computer, the monitor is the hardware device that shows you the output. So, without a monitor, you can not work on your computer.

In our next class, we will be talking about Data and Information. We hope you enjoyed the class.

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Computer Concepts