Setting up connector tabs

All blocks that operate on signals have connector tabs. Input connector tabs let signals enter a block; output connector tabs let signals exit a block. The triangular shape of the connector tab lets you easily see the direction in which the signals travel.

Some blocks have symbols on their connector tabs that indicate how the block acts on the data or the type of data the block is expecting. For example, the “-” on the summingJunction block means that the input is negated.