Seven-segment usually contains the LEDs are arranged in a figure eight pattern. 1:26 Picture shows the configuration of antarmnuka 7-segment common cathode (CC) with mikrokontroler.IC CD4511 is IC decoder BCD to 7-segment. Microcontroller provide equivalent BCD code with the digit 7-segment will ditampikkan through to IC 4511. Seven-Segment Display can also be connected directly without using a decoder BCD to seven-segment.
In this case the code of the digit seven-segment program produced by the microcontroller itself. Figure 2.21 shows the direct relationship to display common anode. If you want to use more than one display, then the display on-multiplex-kan. The human eye can not detect flicker display if the display flashes every 10 ms. Time 10 ms divided by the number of displays used to obtain rectification time interval between each display.
Pictures 1:27 menunujukan multiplex circuit for two common cathode display. IC 7438 is a line of 3 to 8 of the decoder is used to select the display. 1:28 Picture shows the multiplex of display common anode for a direct connection without using a driver BCD to 7-segment.
Figure 28 display common cathode configuration interface with a microcontroller
Figure 29 circuit direct relationship to display common anode
Figure 30 multiplex circuit for two display common cathode
Figure 31 multiplex circuit for two display common anode