Thursday, December 31, 2015

Running text circuit

 
The following is the text of a series of runs where the writing / text principle established by the semiconductor light diode. After all writing / text has been lit, chain and Kwa reset itself. The circuit is built by a CD4017BC IC (IC2). worship one feature CD4017BEs IC is providing ten fully decoded output, making it ideal IC for use in a variety of sequencing the entire operation.

Timer NE555 (IC1) as an astable multivibrator IC2 principle 1Hz clock for sequencing the operations. Reset, output pin goes high and drive three junction transistor T7. Output From junction transistor T7 is connected to the letters W From said semiconductor diode (all running text circuit semiconductor diode connected in parallel)