Progress Summary Relay Computer In this third episode i take a deeper dive into the relay ring counter design and explore how it works. Architectural and circuit design tricks keep the relay count for the cpu low. the relay trainer uses edge triggered d flip flops implemented with just 1.5 dpdt relays bit.
Program Counter Relay Computer In this relay computer, there is a sequencer (the storage component) that is basically a 12 state linear counter. the sequencer increments the state for every change in the clock; in other words, both a rising and falling edge of the clock triggers the sequencer. I've built up the circuit on a breadboard with about a 1hz clock input, as you increase the bias voltage from zero to about 0.6v, all the leds glow very slightly. my thinking here is that the scrs are conducting slightly through the gate, but not enough to latch on. This is a digital clock i built over a period of some 8 months. the digits are controlled by 3 ten stage ring counters, one each for the seconds, minutes and hours. The idea to build this all relay logic digital clock came last year as i was assisting in workshops teaching basic computer science workshops to 10 12 year old kids.
The Ring Counter Clock That Keeps On Ticking By Jerry Lowe Tri L This is a digital clock i built over a period of some 8 months. the digits are controlled by 3 ten stage ring counters, one each for the seconds, minutes and hours. The idea to build this all relay logic digital clock came last year as i was assisting in workshops teaching basic computer science workshops to 10 12 year old kids. Abstract—this paper proposes 8 bit ring counter using pulsed latches. in recent years time efficient circuits are given utmost importance. ring counters are the digital circuits that can be used in many applications like frequency divider circuits, counting the data etc. Using an arduino, dipdot generated audio tones for the clock and data signals and recorded them to the left and right channels of a standard audio cassette. the clock channel pulses would drive a relay based ring counter that stepped through a sequence to latch incoming data bits into a full byte. A ring counter test of the flip flops used in my relay computer. check this out: relaysbc.sourceforge devlog. The digital pulses from this time signal are used by the relay network to create the minutes and hours count, which are read out via a resistor ladder made using 0.1% resistors that drive two.
Comments are closed.