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About E-blocks

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E-blocks are small circuit boards each of which consists of a block of electronics that can be snapped together to form an electronic system. There are two kinds of E-blocks:

Upstream boards

'Upstream' is a computing term which indicates that this is the board that controls the flow of information in a system. Upstream boards are usually device programmers of some kind. Any device which contains 'intelligence' and can dictate the direction of flow of information on the bus can be thought of as an 'upstream' device. Examples include microcontroller boards, and Programmable Logic Device boards. Any device which responds to these changes and whose behaviour is determined by another device can be thought of as a 'downstream' device. Examples include LED boards, RS232 boards etc.

Downstream boards

Downstream boards are controlled by the upstream board - but information can flow into them and from them.

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