
9.56 MICROPROCESSORS AND MICROCONTROLLERS
For displaying 8, the segments to be lighted up are a, b, c, d, e, f, g.
Since, we are using a common cathode type of display, the data to light up a segment is ‘1’.
Hence, the bits from D
0
to D
6
is ‘1’.
us, the seven segment code for the display of 8 is 0111 1111, i.e., 7 FH.
Similarly for ‘A’ it is 0111 0111 i.e., 77 H.i)
For ‘b’ it is 0111 1100 i.e., 7 CH.ii)
9.13.4 | An Eight-Digit Dynamic, Multiplexed Display
In Fig 9.44, the connection between the LED, the port lines and other extra components are
shown. Port A is the digit driving port. It gives the information about which digit is to be ON ...