74HC193 (Presettable Synchronous Counter) dht11 the TCD output will go

the TCD output will go LOW when the circuit is in the zero state and the CPD goes LOW

It basically allows shifting levels between a TTL signal (0 - 5 V) and a RS232 signal (15 V -  -15 V)

Input Clamping Diodes

Mini Vibration Motor is a simple low cost motor

74HC193 (Presettable Synchronous Counter) dht11 the TCD output will goIntroduction : 74HC193 is a 4 bit synchronous binary up down counter. Separate up downclocks, CPU and CPD respectively, simplify operation. The outputs change state synchronouslywith the LOW to HIGH transition of either clock input. If the CPU clock is pulsed while CPD is heldHIGH, the device will count up. If the CPD clock is pulsed while CPU is held HIGH, the device willcount down. Only one clock input can be held HIGH at any time to guarantee