We would like to print a custom greeting on a series of seven-segment displays t
ID: 2268014 • Letter: W
Question
We would like to print a custom greeting on a series of seven-segment displays that says "HELLo AnnA." How many displays would be needed? Assuming every display shared a 7-wire input bus for bits labeled a-g, what minimum clock frequency would be required for the user to see the letters without flicker. (Assume flickering is seen if any display refreshes slower than 30 Hz) c. d. As discussed in class, a multiplexer is used to select the correct letter at the correct time. What minimum number of select lines would be required to display the custom greeting discussed in c) above? With the number of select lines you chose, how many inputs will be present on the multiplexer?Explanation / Answer
Common Character Displays : HELLO ANNA
*********************************************************
This is based on the following pin assignments and sequence of pins.
A
-------
F| |G /|B
|P | /H|
| |/ |
N-- --J
| /| |
E|M/ | K|C
|/ |L |
-------
D
and character <= "HELLO ANNA";
letter_h <= "01101100100010";
letter_e <= "10011100100010";
letter_l <= "00011100000000";
letter_l <= "00011100000000";
letter_o <= "11111100000000";
letter_a <= "11101100100010";
letter_n <= "01101100010001";;
letter_n <= "01101100010001";
letter_a <= "11101100100010";
number_0 <= "11111100010001";
number_1 <= "01100000000000";
number_2 <= "11011000100010";
number_3 <= "11110000100010";
number_4 <= "01100100100010";
number_5 <= "10110100100010";
number_6 <= "10111100100010";
number_7 <= "11100000000000";
number_8 <= "11111100100010";
number_9 <= "11110100100010";
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