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The radio constructor "Start-7245" (Programmable microcontroller) was produced from I quarter of 1990. The Start-7245 RC includes a completely ready motherboard with a K145BM1901 series microcontroller and two printed circuit boards with a set of parts for assembling two options for output stages: a single-pole electronic key relay module on a composite transistor (Darlington circuit) and a two bipolar electronic relay module relay, now referred to as "H-bridge. In addition, the kit includes a thick instruction and a set of circuits, including the circuit of the microcontroller. The controller has a keyboard with a pair of switches (" work-programming "and" single-cyclical "). The keys with numbers and arrows set the direction and duration of movement in any of the four sides.The work of the program is accompanied by blinking and flickering of the LED.