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When the mouse hit the scene attached to the Mac, it was an immediate success. There is something about it that is completely natural. Compared to a graphics tablet, mice are extremely inexpensive and they take up very little desk space. In the PC world, mice took longer to gain ground, mainly because of a lack of support in the operating system. Once Windows 3.1 made Graphical User Interfaces (GUIs) a standard, the mouse became the PC-human interface of choice very quickly. .
The Optical Mouse.
With advances it mouse technology, it appears that the venerable wheeled mouse is in danger of extinction. The now-preferred device for pointing and clicking is the optical mouse. .
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This Microsoft Intellimouse uses optical technology.
Developed by Agilent Technologies and introduced to the world in late 1999, the optical mouse actually uses a tiny camera to take 1,500 pictures every second. .
Optical mice have several benefits over wheeled mice: .
• No moving parts means less wear and a lower chance of failure. .
• There's no way for dirt to get inside the mouse and interfere with the tracking sensors. .
• Increased tracking resolution means smoother response. .
• They don't require a special surface, such as a mouse pad. .
Although LED-based optical mice are fairly recent, another type of optical mouse has been around for over a decade. The original optical-mouse technology bounced a focused beam of light off a highly-reflective mouse pad onto a sensor. The mouse pad had a grid of dark lines. Each time the mouse was moved, the beam of light was interrupted by the grid. Whenever the light was interrupted, the sensor sent a signal to the computer and the cursor moved a corresponding amount. .
The paddle control is the simplest of the analog input devices. Like all variable resistors, the paddle control varies its resistance, thereby changing the voltage of the input circuit in relation to the movement of the paddle's control knob.
Inside & Outside the Computer I would to consider myself an expert when it comes to putting computers together. ... Two of these items are input devices and one is an output device. The one output device is the monitor. ... The two different input devices are the mouse which controls the pointer on the screen. The other is the keyboard which is used to input letters in anything that needs letters to functions. ...
The only problem being that without any input Peripherals you cannot tell the computer to do any of the above processes, and if you could, without an output device of some kind, the computer has no way of delivering the result to the user! ... These can be separated into two categories: - Input devices An input device is any machine that feeds data into a computer. For example, a keyboard is an input device. Input devices other than the keyboard are sometimes called alternate input devices. ... Output devices An output device is any machine capable of representing information from a computer. ...
Data and information need to be stored after input, during processing, and before needed as output. Primary Storage Areas The primary storage unit can be conceptually subdivided into input storage, output storage, program or instruction storage, and working storage. Storage receives data from input devices, program storage contains program instructions, and output storage contains information waiting for transfer to output devices. ... An address register may hold the address of the storage location of data, or the address of an input/output device or a control function. ... Thus secondar...
A Computer is defined as; an electronic device that performs four basic operations: input, processing, output, and storage. ... The Information Processing Cycle includes; Input, Processing, Storage, and also Output. Input can take a variety of forms, from commands you enter by keyboard to data from another computer or device. ... Processing is the manipulation done by the input by a program, to convert the input into information. ... Output devices can be other computers, display screens, speakers, and printers. ...
The Input/Output devices became much faster by the use of magnetic tape. ... There was a big flexibility with input/Output devices. ... The faster input and output devices made possible multiprocessing and multiprogramming. ... There was a great versatility of Input / Output devices. ... Many other Input / Output devices were developed for example : Optical readers, by which whole documents could be fed into computers, Audio response terminals, by which an operator can vocally input data or instructions and scanners, by which pictures can be fed etc.. ...
The Analytical Engine is regarded as the first real predicessor to the modern computer because it has the following: An input device, output device, control unit, processor, and storage. ... This brings me to the computer I have before me. ... The moniter requires a source of input which is where the video card comes into play. ... Before CRT(Cathode Ray Tube) moniter came into use, the teletyper was the standard device which was a large, load device that printed input and output on paper. ... Since the first computer was built, the computer industry has flourished into a massive, fast...
"COMPUTER PROGRAMMERS write, test, and maintain programs or software that tell the computer what to do. ... They develop and write computer programs to store, locate, and retrieve specific documents, data, and information. ... A lot of computer programmers will need to be able to do some of the following tasks: • "Write programs creating a logical series of instructions the computer can follow, applying knowledge of computer capabilities, subject matter, and symbolic logic" • "Code instructions into programming languages and test and debug programs to get intended results" &bul...
