Analog systems represent values that change continuously while digital systems represent values as discrete steps. Digital data is commonly represented using binary with two values of 0 and 1. Some advantages of digital systems are that they are less expensive, more reliable, easy to manipulate, flexible, and compatible with other digital systems. However, digital communications require greater bandwidth than analog to transmit the same information and require synchronization between systems.

1. Data Done By: Ben Jones

2. Analog system Analogue is used to describe something that changes value smoothly. It is the opposite of digital which describes something that changes in steps. For example, there are two kinds of clock, an analogue clock that shows the time with a smoothly moving second hand and a digital clock showing time as a number that flips to a new number as time passes.

3. Digital System Digital means having only discrete values, as opposed to analogue which has continuously changing values. The most common form of 'Digital' data is binary, which simply means the data has only two values namely 0 and 1.

4. Advantages: Less expensive More reliable Easy to manipulate Flexible Compatibility with other digital systems Only digitized information can be transported through a noisy channel without degradation Integrated networks Disadvantages: Sampling Error Digital communications require greater bandwidth than analogue to transmit the same information. The detection of digital signals requires the communications system to be synchronized, whereas generally speaking this is not the case with analogue systems. Advantages: Uses less bandwidth More accurate Disadvantages: The effects of random noise can make signal loss and distortion impossible to recover

5. Operating Systems Athena DVIX DYNIX Unix (Sequent) eComStation eCos EduOS EGOS ekkoBSD AtheOS AtomsNet AuroraOS B-Free BAL Banyan VINES Basic Executive System BeIA CP/K CP/M ExOS Express Famos Fiasco Flamethrower FlashOS FlexOS Flux Linux Lisa OS LTSS LynxOS Möbius Mach Mac OS 8 Mac OS 9 Mac OS X MANOS MaRTE OS