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Seven-segment LCD uses two-wire interface - 09/04/03 EDN
Design Idea You can connect seven-segment LCDs using only a two-wire interface (Figure 1). The two-wire
interface may be at the field-effect, direct-drive LCD or at a serial interface (such as I2C] that uses an
eight-pin microcontroller. The desi. . . [by Hans Krobath, EEC, Nesconset, NY]
Signal
Processor Adds LED Display - 06/06/96 EDN Design Idea
Designers using the Texas Instruments TSS400, a versatile 4-bit sensor-signal processor, may find the circuit in
Figure 1 useful as a replacement for, or an adjunct to, the IC's built-in display capabilities. . . [by N Thomas
Christman, Zablocki VA Hospital, Milwaukee, WI]
Signboard
- On this page, I will introduce the electronic signboard with PIC16F84A.
The message is displayed to flow on the left from the right. 128 LEDs are used for this board. . . [Seiichi
Inoue's Web Site]
Signboard 2
- Iwill introduce the making of the electronic signboard which used
PIC16F84A on thses pages. 112 LEDs (7 x 16) are used for the display of the message. 50 LEDs are used as the
design of the edge. Latch registers by CPLD are used for the display of the LEDs. . . . [Seiichi Inoue's Web
Site]
Simple 0 to 24 dB Gain Amplifier &
Balanced Line Driver - AS022 Application Note (App Note -
04/03/02) . . . [Jenson Transformers]
Simple Active-Matrix LCD Bias Supply Operates from Battery Input
- 02/03/00 EDN Design Idea Many active-matrix-LCD applications need
multiple voltages for thin-film-transistor (TFT]bias. Typically, three voltages are necessary5V for column
driver; a positive voltage, such as 10V; and a negative voltage, such -5V, for . . . [by Michael Shrivathson,
National Semiconductor Corp, Santa Clara, CA]
Simple active-matrix-LCD bias supply operates from battery input
- 02/03/00 EDN Design Idea Many active-matrix-LCD applications need
multiple voltages for thin-film-transistor (TFT]bias. Typically, three voltages are necessary5V for the column
driver; a positive voltage, such as 10V; and a negative voltage, such -5V, f. . . [by Michael Shrivathson,
National Semiconductor Corp, Santa Clara, CA]
Simple LCD interface
takes two wires - 03/26/98 EDN Design Idea (Page has
several Design Ideas, scroll to find this one) Alphanumeric LCD modules can provide an attractive display for a
project, but their parallel I/O lines require a large number of outputs from a µC. For example, a direct LCD
interface would consume all of the I/O pins of a small µC, such as the eight-pin PIC12C508 from Microchip
Technology (Chandler, AZ). . . [by Ed Maste, Jem Designs, Pickering, ON, Canada]
Simple, Low-Cost, 1-Kv Driver
- 05/13/04 EDN Design Idea High-voltage drivers have recently received much attention, because they play an
important role in driving piezoelectric and electro-optical components, for example. Figure 1 shows a simple,
low-cost, 1-kV driver. The circuit uses . . . [by Tai-Shan Liao and Prasit Champa, National Science Council,
Hsinchu, Taiwan]
Single Cell TPS61041 LED Driver - Texas Instruments
provides a broad portfolio of high-performance products for your LED design needs. From RF and power management
(including AC/DC, Power Factor Correction, DC/DC and linear power conversion) to DSPs and ultra-low-power MCUs,
TI has products to differentiate your design. And, TI's local support and applications expertise can help you get
to market faster. . . . [Texas Instruments App Notes, 9-Jun-03]
Single Digit
Scoreboard - a compact general purpose display. . . [by
P. Townshend - EduTek Ltd]
Single Supply Video Line Driver (AC Coupled)
- When AC-coupling video, the waveform dynamics change with respect
to the bias point of the Amplifi er according to the scene brightness of the video stream. In the worst case,
1VP-P video (composite or Luminance + Sync in Y/C or YPBPR format) can exhibit a varying DC content of 0. 56V,
with the dynamic requirement being. . . [Linear Technology App Note - , Mar 25th 2010]
Small mezzanine-board
format offers more I/O - 04/01/99 EDN Design Idea
(contains several designs, scroll to find this one) You can now get both modules and carrier boards for the
PC-MIP mezzanine format. MEN and SBS-Greenspring (now called SBS Technologies) developed the format as a smaller
alternative to PMC modules and lets you put six PCI-based modules on any CompactPCI, PCI, or VME motherboards.
Motorola sponsors the format, and about 20 companies now support it. PC-MIP uses an unaltered PCI bus and the
same connectors as PMC but in a layout measuring 47X90 mm. . . [by Graham Prophet]
Small/Medium LCD Panel less than 14 inch - Application
Block Diagram. . . [Intersil]
Song #Display
- . . .
Song Number
Display - This circuit displays the song track number in
an audio system. . . . [© EFY Enterprises Pvt. Ltd. All rights reserved.]
Speller Effect Sign Display -
. . .
SPI Interface Big 7-Seg LED
- Easy build and use, the general purpose Big LED with SPI serial
interfacing. Expandable for multiple digits but still uses only three wires for receiving data from any uC
boards. . . [Wichit Sirichote, designer]
Super-Simple Coax to Twisted-Pair Adapter
- Launching a baseband camera signal into twisted pair is a
relatively simple matter of building a differential driver such as shown in this circuit. In this realization one
LT6652 is used to create a gain of +1 and another is used to make a gain of –1. Each output is series terminated
in half the line impedance to provide. . . [Linear Technology App Note - , Mar 25th 2010]
S-Video Splitter (AC Coupled)
- This figure shows an LT6551 quad Amplifier driving two sets of S-video
(Y/C format) output cables from a single Y/C source. Internal gain-setting resistors within the LT6551 reduce
part-count. . . . [Linear Technology App Note - , Mar 25th 2010]
Switch Configures Bare-Bones, Two-Digit Display
- 12/21/95 EDN Design Idea A project that includes a stage with three
selectable gains (0. 1, 1. 0, and 10) requires that the rotary-gain switch also function to illuminate one of
three LEDs. These panel-mounted LEDs serve to indicate the gain in use. This arrangement requires two switch
sections—one for selecting the op Amp’s gain-set resistor and one to light the corresponding indicator LED. The
circuit in Figure 1 requires only one more switch section to provide a true, two-digit, seven-section numeric LED
display. The circuit needs no active driver-decoder circuitry. . . [by Joe Wonoski, Yale University Medical
School New Haven, CT]
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