Detailed Description One of the most basic building blocks of computers is the binary number system. This kit counts in binary numbers and displays the binary number by red LEDs. A LED turned on is a 1 and off is a 0. This kit provides an easy to understand display of the binary number. The counter increases by 1 number each time the button is pushed. It also can count automatically by holding the button down. Teaches logic principles and binary counting. This kit features 7 red LEDs, count button, clear button and 2 IC circuit. Counts from 0 up to 127 in binary numbers. Can be used alone or can be connected to the C6360 Decimal Display Kit which displays the decimal number equivalent of the binary number. Operates from 9V battery (not included). Size of circuit board: 3.6” x 3”. Complete with all parts, PC board and instructions. Skill Level 3. Related Items C6367 - TYPE 5 PLASTIC BOX