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Article: Low-cost LCDs implement bar-graph displays.
- Article from:
- EDN
- Article date:
- September 12, 1997
- Author:
CopyrightCOPYRIGHT 1997 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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You can easily implement LCD bar-graph displays in cost-sensitive designs by using widely available, low-cost, alphanumeric LCDs. Bar-graph displays indicate voltage, current, power, battery and fuel gauges, and sound level (in decibels), for example. "The method uses a 16-character-by- one-line, 5x8-dot LCD. In general, all dot-matrix alphanumeric LCDs, such as one line by 16 characters or four lines by 20 characters, have identical features except for their size and dot-character parameters. These displays incorporate RAM (called the character-generator (CG) RAM) for eight user-defined characters.
This bar-graph display [ILLUSTRATION FOR FIGURE 1 OMITTED] uses only ...