Established in 1990, Fadong Power Co., Ltd. is a professional China random generator manufacturer and supplier of in the emergency power supply industry. We not only specialize in manufacturing different kinds of generators, but also in motors, engines, diesels, gearmotors and other power supply products. We also have more than 100 series of equipment to support and check our products, such as VPI equipment, auto painting lines, auto testing systems and CAD systems. We warmly welcome every customer to cooperate with us on the basis of mutual benefit, and hope to be your faithful friend and best partner. Our custom random generators has obtained the certifications of ISO9001-2000, GS/TUV, CE, VL, EPA, QHS, SON, CAP and SRS.

As you can see the set-up is the same as above except that pin 12 of the first counter is the carry over connected to pin 14 of the second counter .
You can if you wish convert the Random Generators into Sequential Running generator by removing the push button switch and connecting the Fast Clock Trigger directly to pin 14 then adjust the trigger speed with RV1.

This is a basic circuit for a note generator . Resistors R1 to R9 are chosen from 0-1K to produce the notes you want and the range can be adjusted with RV1 . After closing S1 , the Manual trigger circuit can be connected to pin 14 to produce a single note in sequence at every push of the button.
As with the other generators above , the Fast Clock Trigger circuit can be connected directly to the trigger pin 14 or through a push button to produce random notes . With patience and the right choice of R1 to R9 it can be made to play a simple tune . The system can be expanded by adding another counter as shown above.

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