lunes, 4 de mayo de 2015

bit (binary digit):

Short for binary digit, the smallest unit of information on a machine. The term was first used in 1946 by John Tukey, a leading statistician and adviser to five presidents. A single bit can hold only one of two values: 0 or 1. More meaningful information is obtained by combining consecutive bits into larger units. For example, abyteis composed of 8 consecutive bits.
Computers are sometimes classified by the number of bits they canprocess at one time or by the number of bits they use to representaddresses. These two values are not always the same, which leads to confusion. For example, classifying a computer as a 32-bit machine might mean that its data registers are 32 bits wide or that it uses 32 bits to identify each address in memory. Whereas larger registers make a computer faster, using more bits for addresses enables a machine to support larger programs.
Graphics are also often described by the number of bits used to represent each dot. A 1-bit image ismonochrome; an 8-bit image supports 256 colors or grayscales; and a 24- or 32-bit graphic supports true color.


















WHAT IS A BIT ????



miércoles, 15 de abril de 2015

1. Group B - 751151 - 751145

Programmer (Programador)

Computer programming (often shortened to programming) is a process that leads from an original formulation of acomputing problem to executable computer programs. Programming involves activities such as analysis, developing understanding, generating algorithms, verification of requirements of algorithms including their correctness and resources consumption, and implementation (commonly referred to as coding[1][2]) of algorithms in a targetprogramming language. Source code is written in one or more programming languages (such as C, Fortran,JavaScript, Lisp, Python, Ruby, Smalltalk, etc.). 



The purpose of programming is to find a sequence of instructions that will automate performing a specific task or solving a given problem. The process of programming thus often requires expertise in many different subjects, including knowledge of the application domain, specialized algorithms and formal logic.





1. Group B - 751151 - 751145

Gigabyte

The term gigabyte is commonly used to mean either 10003 bytes or 10243 bytes. The latter originated as compromise technical jargon for byte multiples that needed to be expressed by the powers of 2 but lacked a convenient name. As 1024 (210) is approximately 1000 (103), roughly corresponding to SI multiples, it was used for binary multiples as well.

Base 10 definition
1 GB = 1000000000 bytes (= 10003 B = 109 B) is the definition recommended by the International System of Units (SI) and the International Electrotechnical Commission (IEC). This definition is used in networking contexts and most storage media, particularly hard drivesFlash-based storage, and DVDs, and is also consistent with the other uses of the SI prefix in computing, such as CPU clock speeds or measures of performance. The Mac OS X file manager from version 10.6 and higher is a notable example of this usage in software. Since Snow Leopard, file sizes are reported in decimal units.


1. Group B - 751151 - 751145

Keylogger (Registrador de letras)


Es un tipo de software que se encarga de registrar las pulsaciones que se realizan en el teclado, para memorizarlas en un fichero y/o enviarlas a través de internet.


It is a type of software that is responsible for recording keystrokes that are made on the keyboard, to memorize them in a file and / or send them via internet.


1. Group B 751151 - 751145

Information (Información)


The information consists of a data set and monitored and sorted, used to construct a phenomenon based on a certain message or entity. The information helps us solve problems and make decisions, as their rational use is the basis of knowledge.







1. Group B - 751151 - 751145

Database (Base de datos)


A database is a collection of information organized to provide efficient retrieval. The collected information could be in any number of formats (electronic, printed, graphic, audio, statistical, combinations). There are physical (paper/print) and electronic databases.


A database could be as simple as an alphabetical arrangement of names in an address book or as complex as a database that provides information in a combination of formats.





1. Group B - 751151-751145

Firewall


In computing, a firewall is a nertwork security system that controls the incoming and outgoing network traffic based on an applied rule set. A firewall establishes a barrier between a trusted, secure internal network and another network (e.g., the Internet) that is assumed not to be secure and trusted. Firewalls exist both as software to run on general purpose hardware and as a hardware appliance. Many hardware-based firewalls also offer other functionality to the internal network they protect, such as acting as a DHCP server for that network.


Many personal computer operating systems include software-based firewalls to protect against threats from the public Internet. Many routers that pass data between networks contain firewall components and, conversely, many firewalls can perform basic routing functions.









miércoles, 8 de abril de 2015

B Group entry 812420-812409 file

Binary

As the formal meaning, binary it's "composed by two units". In our particular object of study, it's related to "0" and "1", the basic unit used in the logic of computation, which 0 will be a "closed" logical and 1 will be "open"
The combination of the binary numbers -in different order- are the foundation of computing.







BIT (binary digit): A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.








                     




INFORMATICS

Branch of engineering that studies the information processing by using automatic machines. It is a broad field that includes the theoretical foundations , design , programming and the use of computers as tools for troubleshooting.









Controller

software element used in various operating systems, also called device driver, device driver or driver.




WEB

Means "world wide web" and as a spider web, it connects every computer on a link that allows to communicate each other









GIGABYTE

The gigabyte is a multiple of the unit byte for digital information.
The prefix giga means 109 in the International System of Units (SI), therefore one gigabyte is 1000000000bytes. The unit symbol for the gigabyte is GB.






Keyloggers 

(Key ( key) and Logger (record) - Key Logger ) is a type of software that is responsible for recording keystrokes that are made on the keyboard, to memorize them in a file and / or send them via internet .








Entries of this post were added by Jairo Andrés , Juan David, Carlos, Juan Esteban, Jennifer, Sneider and Bryan in order of appearance.

Grupo D: Ficha 891434 N°4

Web

It is a word Englishman that means "network", "spiderweb" or "mesh". The concept is in use in the technological area for naming to an IT network and, in general, to Internet (in this case, it is in the habit of being written as Web, with the capital W). The term, anyway, it has several uses. Beside naming Internet in general, the web word can serve mention to a web page, a web site or up to a web servant 


Grupo D: ficha:891434 N°3

Variable

In programming, a variable consists of a space in the storage system (main memory of a computer) and a symbolic name (identifier) ​​that is associated with that space. That space contains a quantity or information known or unknown, that is a value. The variable name is the usual way of referring to the stored value: this separation between name and content allows the name to be used regardless of the exact information they represent. The identifier in the source code of the computer can be linked to a value at runtime and the value of the variable can therefore change during the course of program execution. The concept of variables in computer may not correspond directly to the concept of variables in mathematics. The value of a variable in computing is not necessarily part of an equation or formula and math. In computing a variable can be used in an iterative process: be assigned a value in one place, then using it in another, later reassigned to a new value for later use in the same manera.Procedimientos of this type are known by the name iteration. In computer programming, variables, often assigned to make relatively long descriptive names for use, while the variables in mathematics often have bare names, consisting of one or two characters to brief on their transcript and handling.


Grupo D: ficha: 891434 N°2

The Internet

Internet is a set decentralized of interconnected networks of communication that use the family of protocols TCP/IP, which guarantees that the physical heterogeneous networks that compose it work as the logical only network, of world scope. His origins go back 1969, when there was established the first connection of computers, known as Arpanet, between three universities in California and one in Utah, The United States.



domingo, 29 de marzo de 2015

Entrada numero 6 Ficha 891220 ´JOHAN STIVEN HERNANDEZ

what is informatica?


INFORMATICA : Branch of engineering that studies the information processing by using automatic machines. It is a broad field that includes the theoretical foundations , design , programming and the use of computers as tools for troubleshooting.
FEATURES:
1 No one can apply the traditional figures of the Law on the Information given its originality, so you have to create new figures.
2 risk to the exercise of the freedoms of citizens.
3 continuous emergence of computer goods of economic content they need legal protection.
4 multinational empire imposed a series of clauses that are opposed to Spanish law.
5 Influence of common law in language and in its doctrine.
6 A formation of two French words information and automatique
7 studies the automatic processing of information using electronic devices and computer systems.
8 Discipline charge of studying methods, processes, techniques, development and utilization
9 End to store, process and transmit information and data in digital format.

viernes, 27 de marzo de 2015

Grupo A Entrada 2 Ficha 812420-812409


Duvan Suarez Olejua


DECIMAL

Also called decimal system, numbering system is a positional numeral system in which quantities are represented using arithmetic based powers of the number ten. The set of symbols used (System of Arabic numerals) consists of ten digits: zero (0) - one (1) - two (2) - three (3) - four (4) - five (5) - six (6) - seven (7) - eight (8), nine (9).








Sebastián Ortiz

                                                                        DEVELOPER


A software developer is a person whose work is to research, analyze, design, implement and test software that was required by a specific company or client. A software developer can also create applications for anyone to use that can be distributed in many ways across the internet or platforms dedicated to distribute them. Software developers can be analysts or programmers and they normally work in groups to be able to create software faster.





Santiago Valencia Buitrago

INTERNET

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to link several billion devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), the infrastructure to support email, and peer-to-peer networks for file sharing and telephony.