This circuit uses two National Semiconductor LM3914 dot/bar-display-driver ICs to implement a two-digit, 0 to 5V LED voltmeter that mimics a subranging flash ADC. An LED bar graph comprising five LEDs ...

The circuit in Figure ... Figure 1 A dot- or bar-graph display uses either a one-time-programmable PIC12C508A or, for experimentation, a reprogrammable and reusable PIC16F84A. Use high-brightness ...