Digital Readout Electronic Circuits, page 1

Digital Readout Circuits, Page 1
Digital Readouts: #'s - I J - R S - Z
Last Updated on: Saturday, June 27, 2009 04:42 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

µP Displays 10 Bit Data on Three LEDs: 11/07/96 EDN-Design Ideas / (added 08/05) circuit in Figure 1 uses a PIC16C55 µP to read 10-bit binary data and directly display data in decimal format on three common-cathode LED displays. If value of data exceeds 999, displays show three hyphens (---) to represent overflow. PIC16C55 has high drive capability. Each output pin can source 20 mA and sink 25 mA; outputs can thus directly drive LED display

7 by 10 LED Moving Sign ( 27c512 Eprom): (electronic circuit added 4/05)

7 Segment LED Counter: (circuit added 7/02)

72 LED Clock: (circuit added 7/02)

8x8 Animated LED Signboard: The firmware supplied in current sourcecode archive is VERY BASIC. I do intend to draw more patterns. However, a vast workload coupled with possible emigration has put finished firmware on hold. Please do go ahead and build this circuit though supplied firmware is fully functional. You can have hours of fun designing your own patterns and effects! (project added 10/06)

9 Second Digital Readout Countdown Timer: This circuit provides a visual 9 second delay using a 7 segment digital readout LED. When the switch is closed, the CD4010 up/down counter is preset to 9 and the 555 timer is disabled with the output.... (added 3/07)

9 Second Digital Readout Timer: (circuit added 7/02)

A Novel Process for Vacuum Fluorescent (VF) Display Drivers: National Semiconductor Application Note (app note added 2/06)

AN-1127: LVDS Display Interface: National Semiconductor Application Note (app note added 2/06)

AN-1237: Rsds™ Flat Panel Display Design Guidelines Part 2: National Semiconductor Application Note (app note added 2/06)

AN-378: A Novel Process for Vacuum Fluorescent (VF) Display Drivers: National Semiconductor Application Note (app note added 2/06)

AN-990: Radiated Emissions and CRT Displays: National Semiconductor Application Note (app note added 2/06)

Animated LED Signboard (PIC16C84): (electronic circuit added 4/05)

Big 7-Segment LED Display Board with SPI Interface: The circuit uses a serial-in-parallel out shift register, 74HC595 for receiving serial data from uController board. See example of U5 in schematic, SER is for data input, SRCLK is shift clock and RCLK is Latch clock. Each data bit is shifted into register on rising edge of shift clock. When all data bits are shifted into 8-bit register, rising edge of RCLK will clock data to be latched at each output bit, i.e. QA QH.... (added 4/05)

Circuit Thermally Compensates LCD Contrast Bias: 03/16/95 EDN-Design Ideas / (added 03/03)

Connecting AT90S2313 with LCD Display 2x16 Char and 4x4 Keypad: (electronic circuit added 4/05)

Digital Call Sign Annunciator: (electronic circuit added 4/05)

Easily Display Bit Map Images on Small Graphic Lcds: 11/19/98 EDN-Design Ideas / (added 3/03)

Interfacing 16x2 Character LCD to Parallel Port: (circuit added 7/02)

Digital Readouts: #'s - I J - R S - Z