Definitions

Definitions from Webopedia.com that help me recognize important terms in the world of computers and information technology.

 

Each definition may include words that I have not used before. Underline those terms that you don't understand and look them up, too!

 

September 14, 2015:

 

Router:  A device that forwards data packets along networks. A router is connected to at least two networks and are located at gateways.

 

Data Packets: A piece of a message transmitted over a packet-switching network. See under packet switching. One of the key features of a packet is that it contains the destination address in addition to the data. In IP networks, packets are often called datagrams.

 

Gateways: A node on a network that serves as an entrance to another network.

 

September 21, 2015:

 

Processor:  A small chip that makes the "brains" of a machine. Specifications in the number of cores and its speed in Gigahertz. The higher the number of cores and the higher the gigahertz means faster processing speeds and boot ups.

 

RAM: Random Access Memory is the multitasking ability of a computer and how fast it operates. The more RAM, the more data is kept on hand for immediate access and therefore the faster the applications process your work.

 

September 28, 2015:

 

Software: Computer instructions or data. Anything that can be stored electronically is softward. The storage devices and display devices are called hardware.

 

Operating System: The most important program that runs on a computer. Every computer that you and I use must have an operating systm in order to run other programs. Operating systems perform basic tasks, such as recognizing input from the keyboard or mouse, and sending the right output to the program or hardware to fulfill the task. Often called the OS, computer giants like Microsoft and Apple have their own operating systems.

 

October 12, 2015:

 

Cyber Crime: Cyber crime is any criminal act dealing with computers and networks. Additionally, cyber crime also includes traditional crimes conducted through the Internet.

 

GUI: Abbreviated GUI (pronounced GOO-ee). A program interface that takes advantage of the computer's graphics capabilities to make the program easier to use. Well-designed graphical user interfaces can free the user from learning complex command languages.

 

October 19, 2015:

 

Biometrics: Biometrics generally refers to the study of measurable biological characteristics. In computer security, biometrics refers toauthentication techniques that rely on measurable physical characteristics that can be automatically checked.

There are s

October 19, 2015:

 

Biometrics: Biometrics generally refers to the study of measurable biological characteristics. In computer security, biometrics refers toauthentication techniques that rely on measurable physical characteristics that can be automatically checked.

There are several types of biometric identification schemes:

 

• face: the analysis of facial characteristics

• fingerprint: the analysis of an individual's unique fingerprints

• hand geometry: the analysis of the shape of the hand and the length of the fingers

• retina: the analysis of the capillary vessels located at the back of the eye

• iris: the analysis of the colored ring that surrounds the eye's pupil

• signature: the analysis of the way a person signs his name.

• vein: the analysis of pattern of veins in the back if the hand and the wrist

• voice: the analysis of the tone, pitch, cadence and frequency of a person's voice

 

 

 

October 26, 2015:

 

ROM: Read Only Memory .Pronounced rahm, acronym for read-only memory, computer memory on which data has been prerecorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read. Unlike main memory (RAM), ROM retains its contents even when the computer is turned off. ROM is referred to as being nonvolatile, whereas RAM is volatile.