Description of Monitor

computer monitor is one kind of soft-copy device, since the output is in the form of an electronic signal, in this case a picture that appears on the screen. The picture shown is the result of data processing or input information. The monitor has a range of sizes like a television screen. Each brand and size of the monitor has a different resolution levels. This resolution will determine the sharpness of an image that can be displayed on the monitor screen. These types of monitors today are very diverse, ranging from large shapes with convex screen, to form a thin flat (flat

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06.21 | 0 komentar | Read More

Description of Scanner

Scanner is a tool that can serve to copy or copy images or text that is then stored in the computer's memory. From memory the next computer, stored in a hard disk or floppy disk. Scanner function is similar to a copy machine, photocopiers difference is that the results can be seen in the paper while the scanner results can be displayed via the monitor in advance so we can make improvements or modifications and can then be stored back in the form of text files or image files. In addition there is also an image scanner to scan commonly used to detect the computer answer sheet. Scanners are used to scan the computer answer sheet SCAN IR is used to LJK (Computer Answer Sheet) in general and the National Examination replicates. Scan this type consists of light called optical sensor that can recognize the type 2B pencil. Scanner on the market is a scanner to copy a picture or photo and usually also equipped with OCR (Optical Character Recognition) to copy or copy objects in text form.

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06.19 | 0 komentar | Read More

Description of Touchpad

The unit is usually to enter can be found on laptops and notebooks, by using fingertips. Usually, this unit can be used as a substitute for the mouse. In addition to the touchpad is a model similar units enter the pointing stick and trackball.

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Definition Mouse

Mouse is one unit of input (input device). The function of this tool is to move the pointer or cursor quickly. In addition, it can be as practical commands and faster than with a keyboard. Mouse began to be used to its full potential since the operating system was based GUI (Graphical User Interface). electrical signals as a mouse input device is generated by a small ball inside the mouse, according to the shifting or movement. Most of the three mouse buttons, generally only two buttons used are the left and right buttons. When the mouse is also equipped with roller button (scroll), where is the button located in the middle. The term referred to the suppression of the left click (Click) where the emphasis is going to function when the mouse is on a designated object, but if the object is not in a designated emphasis will be ignored. There are also other terms that referred to the shift (drag) that pressing the left mouse button without releasing the while being moved. Drag this will cause the object to be moved or copied to other objects and other possibilities. The emphasis of the left mouse button twice quickly and regularly referred to as a double click (double click) while pressing the right mouse button once referred to right-click (right click) Mouse consists of several port is a serial mouse, mouse ps / 2, usb and wireless .

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Definition Keyboard

Keyboard input is the most important unit in a data processing computer. The keyboard can function include letters, numbers, special characters, and as a medium for the user (users) to perform other commands are required, such as saving files and opening files. The creation of a computer keyboard from typewriter models were created and patented by Christopher Latham in 1868, and in 1887 the company manufactured and marketed by Remington. The keyboard on the use of now this is kind of QWERTY, in 1973, was unveiled as a keyboard standard keyboard ISO (International Standards Organization). The number keys on the keyboard keys numbered 104. Keyboard now that we know have some kind of port, the serial port, ps2, usb and wireless.



Types of Keyboard:

1.) QWERTY

2.) Dvorak

3.) KLOCKENBERG

Keyboard is commonly used type QWERTY keyboard, which is similar to the shape keys on a typewriter. The QWERTY keyboard has four parts:

1. typewriter key

2. numeric key

3. function key

4. special function key.


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Definition Hardware

Definition of the hardware or in the Indonesian language it is also called by the name of "hardware" is one component of a computer that the nature of his instrument can be seen and touched, directly or in the form of real, which serves to support the computerization process.


Hardware can work based on pre-defined commands available to him, or what is also referred to by the term instruction set. With the commands that can be understood by the hardware, the hardware can perform a variety of activities that have been specified by the command.

Physically, the computer consists of multiple components that constitute a system. The system is the components which work together to form a union. If one component is not working, will result in malfunction of the existing processes with good computer. Computer components are included in the category of hardware elements (hardware). Based on the function, the computer hardware is divided into:

1. divice input (input unit)

2. Process device (processing unit)

3. Output device (output unit)

4. Backing Storage (storage unit)

5. Peripherals (additional units)

The basic components of the computer consists of input, process, output and storage. Input device consists of a keyboard and mouse, Process devices are microprocessor (ALU, Internal Communication, Registers and control section), Output device consists of a monitor and a printer, external memory storage consists of hard drives, floppy drives, CD ROM, magnetic tape. Storage internal memory consists of RAM and ROM. While the Peripheral Device component is an additional component or as a component that did not exist or did not exist before. Peripheral Component example: TV Tuner Card, Modem, Capture Card.

1. Input Unit (Input Device)

This unit serves as a medium to incorporate data from outside into a memory and a processor for processing in order to produce the required information. Input devices or input units commonly used personal computer (PC) is a keyboard and mouse, keyboard and mouse is a unit that connects user (users) and computers. In addition there is a joystick, which is used to play games or play with computers. Then the scanner to take pictures as digital images that can later be manipulated. Touch panel, using the touch of a finger users can access the file. Microphone, to record sounds into the computer.

Data is entered into the computer system can form the input signal and maintenance input. Signal input form data entered into the computer system, while the shape of input maintenance program used to process the data entered. So the input device is also used to enter the data can be used to enter the program. By its nature, the input devices can be classified into two general categories:

• peratalan direct input, the input is entered directly processed by the processing equipment. For example: keyboard, mouse, touch screen, light pen, graphics tablet digitizer, scanner.

• Equipment indirect input, input via a particular media before an input is processed by the processing equipment. For example: the punched card, floppy disk, hard disk.




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