n. Seven Segment Display Lesson

# n. Seven Segment Display Lesson - 1COMPUTER ENGINEERING...

This preview shows pages 1–2. Sign up to view the full content.

7 3 5 6 4 1 2 d 8 b f g e c a 12 10 9 11 14 13 1 C OMPUTER E NGINEERING Name:________________________ Seven-Segment Display Purpose: To determine the pins in a seven segment-display that will light each of the seven segments. Theory: The seven-segment display provides a way of expressing binary numbers in a decimal format. It is composed of seven small bars each of which is a LED. By knowing which segment to light, any digit from 0 through 9 can be formed. Pin 3 and pin 14 are connected to a +5v power source through a 220 Ω resistor. The chip schematic is shown below. +5V +5V Procedure: 1. Carefully insert the 7-segment display so that it straddles the centre groove of the breadboard. 2. Connect a 220 Ω resistor from pin 14 and pin 3 to D0 on the parallel port. Connecting pin 3 & 14 directly to +5v will damage the seven-segment display. One resistor should serve both pins. Note: Only two wires are connected to the 7-segment display chip at one time 3. Type this program into Turing. parallelput ( 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 02/10/2011 for the course ICE 4M1 taught by Professor Deabr during the Spring '11 term at Spring Arbor University.

### Page1 / 2

n. Seven Segment Display Lesson - 1COMPUTER ENGINEERING...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online