In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Timothy D. Swieter wrote:

I installed the SX/B package today because I hope to get some of the development tools soon.  I was looking at the time/clock example in the help file.  This example multiplexs the pins on several 7-segement displays.  I understand the logic that is going on in the code.  On the electrical end, it looks like all 7 segments (plus the decimal point) can be on at once meaning a lot of current will go through the single pin on the cathode - right?  
 

In the recent issues of Nuts and Volts something similar was done with a PIC, but the code in the article quickly turn on and back off each segment.  

 

Any insights that the community has related to the current draw?  I see the resistors limiting the current.  I have not hooked up a circuit yet, so I can't say how dim/bright the display is.

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