The MM74C912 display controllers are interface elements,
with memory, that drive a 6-digit, 8-segment LED display.
The display controllers receive data information through 5
data inputs A, B, C, D and DP, and digit information through
3 address inputs K1, K2 and K3.
The HCF4052B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages.
The HCF4052B analog multiplexer/demultiplexer is a digitally controlled analog switch having low ON impedance and very low OFF leakage current. This multiplexer circuit dissipate extremely low quiescent power over the full VDD -VSS and VDD -VEE supply voltage range, independent of the logic state of the control signals.
When a logic "1" is present at the inhibit input terminal all channel are off. This device is a differential 4-channel multiplexer having two binary control inputs, A and B and an inhibit input. The two binary input signals selects 1 of 4 pairs of channels to be turned on and connect the analog inputs to the outputs.
The DAC0800 series are monolithic 8-bit high-speed current-output digital-to-analog converters (DAC) featuring typical settling times of 100 ns. When used as a multiplying DAC, monotonic performance over a 40 to 1 reference current range is possible. The DAC0800 series also features high compliance complementary current outputs to allow differential output voltages of 20 Vp-p with simple resistor loads. The reference-to-full-scale current matching of better than ±1 LSB eliminates the need for full-scale trims in most applications, while the nonlinearities of better than ±0.1% over temperature minimizes system error accumulations.
The noise immune inputs will accept a variety of logic levels. The performance and characteristics of the device are essentially unchanged over the ±4.5V to ±18V power supply range and power consumption at only 33 mW with ±5V supplies is independent of logic input levels.
T12E is an encoder integrated circuit of 212 series of encoders. They are paired with 212 series of decoders for use in remote control system applications. It is mainly used in interfacing RF and infrared circuits. The chosen pair of encoder/decoder should have same number of addresses and data format.
Simply put, HT12E converts the parallel inputs into serial output. It encodes the 12 bit parallel data into serial for transmission through an RF transmitter. These 12 bits are divided into 8 address bits and 4 data bits.
HT12E has a transmission enable pin which is active low. When a trigger signal is received on TE pin, the programmed addresses/data are transmitted together with the header bits via an RF or an infrared transmission medium. HT12E begins a 4-word transmission cycle upon receipt of a transmission enable. This cycle is repeated as long as TE is kept low. As soon as TE returns to high, the encoder output completes its final cycle and then stops.
CONSTRUYE TU PROPIO VOLTIMETRO/AMPERIMETRO/INSTRUMENTO DE MEDICION CON ESTE CIRCUITO CONVERTIDOR A/D 4 DIGITOS, RECIBE UNA ENTRADA ANALOGICA Y MANDA EL RESULTADO A 4 DISPLAYS DE 7 SEGMENTOS, SIN NECESIDAD DE CIRCUITOS EXTRA...