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Interfacing 7-segment display using 7447 decoder

by Ranjith | August 17th, 2009.
Interfacing 7-segment display using 7447 decoder

The Light Emitting Diode (LED), finds its place in many applications in this modern electronic fields. One of them is the Seven Segment Display. Seven-segment displays contains the arrangement of the LEDs in “Eight” (8) passion, and a Dot (.) with a common electrode, lead (Anode or Cathode). The purpose of arranging it in that [...]

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Robotic car using 8951 Microcontroller

by Ranjith | November 19th, 2008.
Robotic car using 8951 Microcontroller

Robotic Car is a miniature prototype car powered by batteries whose various movements can be control either manually or automatically, or the combination of both.

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Interfacing an LCD to the 8951 Microcontroller

by Ranjith | November 19th, 2008.
Interfacing an LCD to the 8951 Microcontroller

LCD pin descriptions:
The LCD discussed in this section has 14 pins. The function of each pin is given in table.
Vcc, Vss, and VEE:
While Vcc and Vss  provide  +5V and ground, respectively, VEE  is used for controlling LCD contrast.
RS – register select:
There are two very important registers inside the LCD. The RS pin is used [...]

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