Binary code
65 = A   97 = a
66 = B   98 = b
67 = C   99 = c
68 = D   100 = d
69 = E   101 = e
70 = F   102 = f
71 = G   103 = g
72 = H   104 = h
73 = I   105 = i
74 = J   106 = j
75 = K   107 = k
76 = L   108 = l
77 = M   109 = m
78 = N   110 = n
79 = O   111 = o
80 = P   112 = p
81 = Q   113 = q
82 = R   114 = r
83 = S   115 = s
84 = T   116 = t
85 = U   117 = u
86 = V   118 = v
87 = W   119 = w
88 = X   120 = x
89 = Y   121 = y
90 = Z   122 = z
             
128 64 32 16 8 4 2   1
0 1 0  0 1 0 1 E = 01000101
Pick a letter say
 E = 69

Find Integer  128



How many
 times does
 128 go into 69
does not
= 0

Find Integer
 64
How many
 times does
 64 go into 69
 goes into it once
  = 1

now subtract 64 - 69
  = 5

Find Integer
32


How many
 times does
32 go into 5
does not
  = 0


Find Integer
16
How many
 times does
16 go into 5


 = 0


Find Integer
8
How many
 times does
8 go into 5


= 0


Find Integer
4
How many
 times does
4 go into 5

= 1

now subtract
 5 - 4
 = 1


Find Integer
2
How many
 times does
2 go into 1


= 0


Find Integer

1
4How many
 times does
1 go into 1


= 1
If you end with a+ or a- number then you have not done it proper