In January, the US is joining the rest of the world in using 13 digit, as opposed to 12 digit, bar codes. The current US system is called UPN, or ‘Universal Product Code’. The system everyone else uses is EAN, so called because it is administered by the European Assistance Network. Bar codes are quite [...]
This post is part of a series of 46 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.
Morse Code is probably one of the more famous coding systems. It was demonstrated in 1836 by Samuel Morse for use initially on telegraphs. It is still used today by radio operators, and will often get through when a voice communication would be incomprehensible. It is a system made of dots and dashes. A dash [...]
This post is part of a series of 46 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.
ASCII is a very well known coding system. It is an 8 bit system and is used in computer systems to allow characters and symbols to be represented as strings of numbers. At the fundamental level a computer deals in lists of numbers. Computers operate on a binary system, in other words they have only [...]
This post is part of a series of 46 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.
Bar Codes
This post is part of a series of 46 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.