MM5314N Driven Digital Clock Circuit


Posted on Feb 7, 2014

MM5314 a monolithic MOS integrated circuit that utilizes P-channel low threshold, enhancement mode and ion planted, depletion mode devices which has features such as internal multiplex oscillator, fast and slow set controls, single power supply, 7-segment outputs, leading zero blanking, operating at 50 Hz or 60 Hz, and 12 or 24 hour display fo


MM5314N Driven Digital Clock Circuit
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rmat 7 Segment LED is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot-matrix displays also known as seven-segment indicator A digital clock is a type of clock in which the time is displayed in a numerical form being associated with electronic devices. It uses a digital display rather than moving hands. The basis of the circuit design evolves in a single MOS IC MM5314N. Other necessary circuits are operated through the MM5314 IC which works together with six common anode 7-segment displays. The multisegment LED common anode configuration reduces the number of wires between the LED modules where all positive ends are connected together. In practical design, the longest pin of the LED is the positive or the anode part. The 7-segment displays are driven by thirteen transistors consisting of BC550 and BC560. The timing of the circuit is determined by the frequency of the network with a value of 50 Hz, which imposes the simplest solution. To maintain a stable output frequency, a crystal oscillator may be used. It uses a quartz crystal to produce fixed frequency oscillations where accuracy and stability are the primary considerations. It uses the mechanical resonance of a vibrating crystal to produce a very precise frequency from the creation of an electrical signal. The six displays of 7-segment common anode provide the output for the time. LEDs DS1 and DS2...




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