LEARNINGS OF THE WEEK

By: Sharra Mae S. Tagaro IV- Rizal

Fundamental elements of a computer

2.Output Devices- An output device is any peripheral device that presents, displays, alters or records output after it has left a computer’s system unit. Output device data can appear in various forms such as graphics, laser light, sound, or text. Examples of output devices are computer speaker, monitor, Printer.

A.computer speaker- converts output data into sound.

B.monitor- give users visual presentation of keyboard commands and mouse movements.

C.printer- creates images on paper, plastic, and other print media.

a.laser printers- uses toner and an internal laser to print.

b.inkjet printers- uses ink to print.

c.dot- matrix printer- creates characters by sriking pins against an ink ribbon.

characteristics of printers

*quality of type

*speed

*impact or non- impact

*graphics

3.Input devices- An input device is any peripheral appliance that generates input for the computer and allows user to enter information into the computer to be processed. Input devices allow users to provide a computer with commands, software, instructions, and information. Examples of input devices are keyboard, Microphone, scanner, Digital Camera, Graphic Tablet, Joy stick.

A.Keyboard- set of typewriter like keys that enables you to enter data into a computer.

a.alphanumeric keys

b.punctuation keys

c.special keys

B.Mouse- a device that controls the movements of the cursor on the screen.

C.Microphone- allows the computer to recieve and record sound.

D.Scanner- used to create a computerized version of a photo.

E.Digital camera- takes picture without a film.

F.Graphic tablet- objects are drawn using a pen or a puck.

G.Joystick- a handheld stick; used to control computer games.

Five Elements of Computing Process

1.Hardware- components that can be physically handled.

2.Software- instruction that tell the hardware what to do.

3.Data- the raw facts that the computer can change into useful information.

4.People- the "end users".

5.Procedure- steps that the end user must follow.