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Kit#: QK15 2 DIGITS UP/DOWN COUNTER : A Wonderfull timer kit. Uses Cmos 40110 at each digit. You can make more than 2 digits by attaching more IC's simply one 40110 for one digit. 3 switches used for count UP , DOWN and RESET. operates at 12 V DC (power supply not included in kit ). Price: $ 8.00 each Quantity Kit#: QK72 PULSE COUNTER 2 DIGITS : This is the 2 Digits Up counter using common cathode 7 segments. Counts from 00 to 99. Slide switch is given for selecting the counter at automaic mode or manual mode. In automatic mode the 555 timer IC is generatin the pulses in certain duration (duration can be adjusted by potentiometer) after recieving each pulse the counter Cmos 4026 will display the next count. At manual mode the pulsar section will disconnect and you should manually give the pulse by pressing push switch and the other push switch is for reset. Price: $ 7.00 each Quantity Kit#: QK73 PULSE COUNTER 3 DIGITS : This is the 3 Digits Up counter using common cathode 7 segments. Counts from 000 to 999. Slide switch is given for selecting the counter at automaic mode or manual mode. In automatic mode the 555 timer IC is generatin the pulses in certain duration (duration can be adjusted by potentiometer) after recieving each pulse the counter Cmos 4026 will display the next count. At manual mode the pulsar section will disconnect and you should manually give the pulse by pressing push switch and the other push switch is for reset. Price: $ 8.00 each Quantity Kit#: QK74 PULSE COUNTER 4 DIGITS : This is the 4 Digits Up counter using common cathode 7 segments. Counts from 0000 to 9999. Slide switch is given for selecting the counter at automaic mode or manual mode. In automatic mode the 555 timer IC is generatin the pulses in certain duration (duration can be adjusted by potentiometer) after recieving each pulse the counter Cmos 4026 will display the next count. At manual mode the pulsar section will disconnect and you should manually give the pulse by pressing push switch and the other push switch is for reset. Price: $ 10.00 each Quantity

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