Tute Spark Week 3

Digital describes electronic technology that generates, stores and processes data in terms of two states: positive and non-positive. Positive is expressed or represented by the number 1 and non-positive by the number 0. Thus data transmitted or stored with digital technology is expressed as a string of 0's and 1's. Each of these state digits is referred to as a bit and a string of bits that a computer can address individually as a group is a byte. Digital technology is primarily used with new physical communications media such as satelite and fiber optic transmission.

Anolog technology conveys data as electronic signals of varying frequency or amplitude that are added to carriers waves of a given frequency. Broadcast and phone transmission has conventionally used anolg technology. A typical anolog device is a clock with the hands moving continuously around the face.

(link: searchcio-midmarket.techtarget.com/sDefinition/0,,sid183_gci211948,00.html)

Communication is a process whereby information is enclosed in a package and is channeled and imparted by a sender to a reciever via some medium. The reciever then decodes the message and then gives the sender a feedback. All forms of communication require a sender, a message and an intended recipient. Communication requires that all parties have an area of communicative commonality. There are auditory means such as, speech, song, and tone of voice, and there are nonverbal means such as body language, sign language and paralanguage, touch, eye contact and through the media i.e. pictures, graphics, writing and sound.

(link: en.wikipedia.org/wiki/Communication)

Electronic refers to the branch of science and technology which makes use of the controlled motion opf electrons through different media and vacuum. Most electronic devices today use semiconductor componants to perform electro control.

(link: en.wikipedia.org/wiki/Electronics)

Three Examples of digital devices that are NOT electronic:
1. An Abacus was created sometime between 1000BC and 500BC. It later became a form of calculation frequency, nowadays it can be used as a very advanced yet baisc digital calculator that uses beads on rows to represent numbers.

2. Morse Code uses six digital states, dot, dash, intra character gap, short gap, medium gap and long gap to send messages via a variety of potential carriers such as electricity and light, for example using an electrical telegraph or a flashing light.

3. The Braille system was the first binary format for character encoding, using a six bit code rendered as dot patterns.

(link: en.wikipedia.org/wiki/Digital)