Computer Systems

Computer Systems

Computer Nomenclature

In computer programming, a naming convention is a set of rules for choosing the character sequence to be used for identifiers which denote variables, types, functions, and other entities in source code and documentation.

Reasons for using a naming convention (as opposed to allowing programmers to choose any character sequence) include the following:

To reduce the effort needed to read and understand source code

To enhance source code appearance (for example, by disallowing overly long names or unclear abbreviations).

The choice of naming conventions can be an enormously controversial issue, with partisans of each holding theirs to be the best and others to be inferior. Colloquially, this is said to be a matter of "religion". Many companies have also established their own set of conventions to best meet their interests.

Input Devices

These devices allow the computer user to enter data, commands and programs in the CPU. The most common input device transformed by the computer into recognizable patterns. Other input devices are styluses that transmit graphic information from electronic to computer tablets, joysticks and mouse, which makes moving physical movement within a computer display, light scanners, they read words or symbols of a and translate printed page to electronic configurations that the computer can handle and store, and the speech recognition modules, which convert the spoken word into digital signals understood by the computer. These enable external data to the computer for further processing by the CPU (Chen, 2013). These data may come from different sources, the main human. The most common input devices are:

Keyboard

Microphone

Scanner

Mouse or mouse

Joystick

Gamepad

Barcode scanner

Webcam

Stylus

Digital Camera

Output Devices

These devices allow the user to view the results of the calculations or data manipulations computer. The most common output device is the display unit, which consists of a monitor that displays characters and graphics on a screen similar to the TV. Usually monitors have cathode ray tube as any TV, even if the computers and laptops today use small liquid crystal displays (LCD, which stands for Liquid Crystal Displays) or electroluminescent. Other common output devices are printers, which can obtain a paper copy of the information that resides on storage devices, sound cards and modems (Candelaria et.al, 2013). They receive the information processed by the CPU and reproduce, so that is perceptible by the user. Some examples are:

Display

Monitor

Printer

Fax

Sound Card

Speaker

Digital Projector

Headphones

Graphics

The infographic is a visual representation of the texts themselves, in the intervening descriptions, narratives or interpretations presented graphically usually figurative, which may or may not coincide with abstract graphics and / or sounds. The infographic was created as a means of conveying information graphically. Maps, charts, cartoons, etc. Infogrames, i.e. parts of computer graphics, with which it allows these complete information but can be complementary or synthetic.

The term has also become popular to refer to all those CGI. More specifically usually refers to creating images that try to mimic the three-dimensional world by calculating the behaviour of light, volume, atmosphere, shadows, textures, camera, movement etc.These techniques are based on complex mathematical calculations, may try to get pictures real or not, in which case we speak of ...