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A rectangle marked CTR with a modulus number.
Also known as: Digital counter, CTR, Divider, Box marked CTR
A counter symbol carries its own modulus: CTR16 counts to sixteen and wraps. The label is part of the standard rather than a manufacturer's note, so the symbol says what the device does without a datasheet.
Denotes a digital counter, the label CTR followed by the modulus giving the count length.
Contexts: Electrical equipment
Distinguishes ripple from synchronous counters by internal qualifying labels rather than by outline shape.
Contexts: Electrical equipment
Wraps to zero on overflow, the carry output being what allows counters to be cascaded.
Contexts: Electrical equipment
An upright rectangle bearing the letters CTR and a numeral, with a clock input on the left and count outputs on the right.