Created
May 22, 2018 15:21
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# Mr. Coxall | |
from microbit import * | |
def convert_dec_to_bin(int_number, binary_digits): | |
# convert a decimal number to binary stored in an array | |
if int_number < 0: | |
# it is a negative number | |
positive_equivalent = pow(2, binary_digits)-abs(int_number)-1 | |
answer = bin(~positive_equivalent) | |
answer_array = list(answer) | |
answer_array.pop(0) | |
answer_array.pop(0) | |
answer_array.pop(0) | |
else: | |
answer = bin(int_number) | |
answer_array = list(answer) | |
answer_array.pop(0) | |
answer_array.pop(0) | |
# now pad the front with 0s | |
while len(answer_array) < binary_digits: | |
answer_array.insert(0, 0) | |
answer_array = list(map(int, answer_array)) | |
return answer_array | |
# starting values | |
start_number = -8 | |
end_number = 7 | |
number_of_binary_digits = 4 | |
pin0.write_digital(0) | |
pin1.write_digital(0) | |
pin2.write_digital(0) | |
pin8.write_digital(0) | |
pin12.write_digital(0) | |
pin13.write_digital(0) | |
pin14.write_digital(0) | |
pin15.write_digital(0) | |
display.show(Image.YES) | |
sleep(500) | |
# variable holding the decimal value of a button | |
a_input = 0 | |
a_input_as_binary = [] | |
b_input = 0 | |
b_input_as_binary = [] | |
while True: | |
display.clear() | |
for b_input in range(start_number, end_number+1): | |
for a_input in range(start_number, end_number+1): | |
# convert decimal to binary | |
a_input_as_binary = convert_dec_to_bin(a_input, number_of_binary_digits) | |
b_input_as_binary = convert_dec_to_bin(b_input, number_of_binary_digits) | |
# turn on the digital pins | |
#display.scroll(str(a_input_as_binary)) | |
pin0.write_digital(int(a_input_as_binary[3])) | |
pin1.write_digital(int(a_input_as_binary[2])) | |
pin2.write_digital(int(a_input_as_binary[1])) | |
pin8.write_digital(int(a_input_as_binary[0])) | |
#display.scroll(str(b_input_as_binary)) | |
pin12.write_digital(int(b_input_as_binary[3])) | |
pin13.write_digital(int(b_input_as_binary[2])) | |
pin14.write_digital(int(b_input_as_binary[1])) | |
pin15.write_digital(int(b_input_as_binary[0])) | |
display.scroll(str(a_input) + "+" + str(b_input) + "=" + str(a_input+b_input)) | |
sleep(500) |
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