sprocket pulse

sprocket pulse

[′spräk·ət ‚pəls]
(computer science)
A pulse generated by a magnetized spot which accompanies every character recorded on magnetic tape; this pulse is used during read operations to regulate the timing of the read circuits, and also to provide a count on the number of characters read from the tape.
A pulse generated by the sprocket or driving hole in paper tape which serves as the timing pulse for reading or punching the paper tape.