Input may refer to:
- Advice (opinion), an opinion or recommendation offered as a guide to action, conduct.
- Information, any data entered into a computer or data processing system, see input output
- The act of entering data into a computer or data processing system (see Input/output).
- Input device, any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system (such as a computer)
- Stimulus (physiology), a detectable change in the environment that influences an activity of an organism
- Power consumption, an amount of power used by a system.
- International Public Television Screening Conference, an international public television organization
- In economics, a factor of production, a resource employed to produce goods and services.
Comand- is a directive to a computer program acting as an interpreter of some kind, in order to perform a specific task. Most commonly a command is a directive to some kind of command line interface, such as a shell.
3.Different type of computer mouse. Function of Computer Mouse, Mouses or MiceAnd the time finally comes. Different type of computer mouse has been invented to put an end to the complicated commands in the old version of operating system.
Since its arrival the mouse has reduced the frequent use of the computer keyboard but especially has simplified the user to access to various functions.
With this device you can track, drag, select, move files, icons and folders…, draws pictures… navigate all over the applications of your computer.
With this device you can track, drag, select, move files, icons and folders…, draws pictures… navigate all over the applications of your computer.
To facilitate your multiple tasks you can use one of the different types of mice.
The mechanical mouse requires a ball to move the cursor on the screen. To get more efficacies with this type of mice, a flat surface named mouse pads is necessary.
The optomechanical or optical-mechanical mouse is a combination of the optical and the mechanical technologies. It uses a ball but detects the mouse movement optically. It is now the most commonly used with PC.
The optical mouse uses a laser; precisely an optical sensor to help detecting the mouse’s moving. More expensive than the two other types, the optical mouses offer more precision and speed and even can be used on any surface.
To be really useful, the mouse has to be connected to your PC. To transmit data to the computer three types of interfaces can be used:
To be really useful, the mouse has to be connected to your PC. To transmit data to the computer three types of interfaces can be used:
The RS-232C serial port connects the mouse to the computer through a thin electrical cord using a 9 pin connector.
The PS/2 port do the same as the first interface mentioned but using a 6 pin connector.
The USB interface receives various types of mice through a USB connector. One of these advantages to use the USB mouse is the possibility to plug-and-play (it) in front or in the back of your computer case, when it contains these kinds of port.
One of the most interesting mouse technologies invented is the wireless mouse which relies infrared, radio signals or Bluetooth to communicate with the computer. Using no cord, the wireless mouse contains a transmitter to send information to a receiver itself connected to the computer. The wireless mouse is usable from 2m to 10m of the computer.
The cordless mouse uses the wireless communication technology (via infrared, radio or Bluetooth) to transmit data to the computer. And like the wireless, it doesn’t use any cord.
Other specification to consider about different type of mice is the function of the buttons. Depending on the manufacturer a computer mouse can have 1 to 4 buttons. However the most commonly used is the two mouse buttons of which the primary button is located to the left side of the mouse.
Especially for computer games players, some mice have been built with five or more extensive arrays of buttons which give easily access to various functions.
Finally each of the different type of computer mouses seems more usable with the scroll wheel, very effective with long document pages. As a matter of fact the scroll wheel can be rotated up and down to navigate within a page as the arrows “up and down” buttons on the keyboard.
Sometimes instead of the scroll wheel, a center button or a “rocker” button is designed to the same effects. But they have to be pressed at the top or bottom to achieve the same tasks.
Even though you are using Laptop computer it’s actually easier to navigate with one these different types of computer mouse.
4.Three Types of Technology
2. Common Keys and buttons on a desktop computer keyboards
A keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single written symbol. However, to produce some symbols requires pressing and holding several keys simultaneously or in sequence. While most keyboard keys produce letters, numbers or signs (characters), other keys or simultaneous key presses can produce actions or computer commands.
Space indicator,The Escape key (often abbreviated Esc),The Menu key or Application key is a key found on Windows-oriented computer keyboards. It is used to launch a context menu with the keyboard rather than with the usual right mouse button.The Break key/Pause key,
Navigation keys include a variety of keys which move the cursor to different positions on the screen. Arrow keys are programmed to move the cursor in a specified direction; page scroll keys, such as the 'Page Up and Page Down keys', scroll the page up and down. The Home key is used to return the cursor to the beginning of the line where the cursor is located; the End key puts the cursor at the end of the line. The Tab key advances the cursor to the next tab stop.
The Insert key is mainly used to switch between overtype mode, in which the cursor overwrites any text that is present on and after its current location, and insert mode, where the cursor inserts a character at its current position, forcing all characters past it one position further. The Delete key discards the character ahead of the cursor's position, moving all following characters one position "back" towards the freed place. On many notebook computer keyboards the key labeled Delete (sometimes Delete and Backspace are printed on the same key) serves the same purpose as a Backspace key. The Backspace key deletes the preceding character.
Lock keys lock part of a keyboard, depending on the settings selected. The lock keys are scattered around the keyboard. Most styles of keyboards have three LEDs indicating which locks are enabled, in the upper right corner above the numpad. The lock keys include Scroll lock, Num lock (which allows the use of the numeric keypad), and Caps lock.
Modifiers
The most widely-used modifier keys include the Control key, Shift key and the Alt key. The AltGr key is used to access additional symbols for keys that have three symbols printed on them. On the Macintosh and Apple keyboards, the modifier keys are the Option key and Command key, respectively. On MIT computer keyboards, the Meta key is used as a modifier and for Windows keyboards, there is a Windows key. Compact keyboard layouts often use a Fn key. "Dead keys" allow placement of a diacritic mark, such as an accent, on the following letter (e.g., the Compose key).
The Enter/Return key typically causes a command line, window form or dialog box to operate its default function, which is typically to finish an "entry" and begin the desired process. In word processing applications, pressing the enter key ends a paragraph and starts a new one.
Differences between mobile computer keyboard to desktop computer.
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