Experiment #4. 7-segment indicator.

Goal: to show digits on seven segment indicator.

What we have: pic16f628a and 7-segment indicator with common cathode, shift register 74hc164.

From the start – I’ve used shift register because it’s very wasteful to use 8 pins of uc for one 7-segment indicator. With this shift register we can use only 4 pins:

  1. For clock
  2. For reset.
  3. For data.
  4. For supply transistor.

There is no description of the shift register work, just about 7-segment indicator.

So, for the begining, let’s build simple test setup and write code, which will display all digits with 1s period (like a stopwatch:)).

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How-to update Suse from ISO

For successful update of a system, it’s necessary to connect your ISO file in the Yast and to give it name (ISO11_3 for example) and to turn off all other repos.

The next step is typing command in a terminal:

zypper dup -r ISO11_3

And just read what you need to do (type yes or no) and wait for complitely update.