Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

multiplexing 7 segment via serial port from pc to pic877a

Status
Not open for further replies.
B

blush

Newbie level 5
Joined
Jan 25, 2012
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,330
need help..
i want to display 4 digit number to a multiplex 4 digit 7 segment wherein the data is came from the pc via serial port to the pic then pic to 7 segment.. my problem is how to display the data? and how to program it. i use max3245 to convert the voltage output of the pc to the pic
 

Basically:
Use 7 outputs of the pic to drive the 7-segments of the displays
Use 4 outputs of the pic to select 1 of 4 digits (cathode or anode, depending)

1) Decode the message from the PC into 4 digits (depending what the format from the PC is)
2) Sequentially translate each digit into its 7-segment representation
3) Put the 7-segment data on the outputs and drive the appropriate digit-select output
4) Select the next digit.
5) Repeat
 

can you give me a code for displaying the number into the 7segment?
 

The following tutorials cover both the Baseline and Midrange PICs using both Assembly and C languages.

**broken link removed**



Lesson 12 of the Midrange PIC Assembly Language Tutorials, covers Multiplexing 7-Segment Displays:





The lesson example implements a Multiplexed 3-Digit Display, which can be easily adapted to 4-Digit.


BigDog
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top