Page 93 - Bebop to The Boolean Boogie An Unconventional Guide to Electronics Fundamentals, Components, and Processes

-Z7 = -128’5 column = bit 7 +Negative
value
+26 = +64’5 column = bit 6
+Z5 = +32‘scolumn = bit5
+Z4 = +16scolumn = bit4
+Z3 = +8’5 column = bit 3
+22 = +4’s column = bit 2 values
+2’ = +2‘5 column = bit 1
+2O = +l’s column = bit 0

0 1 1 1 1 1 1 O= 126,,
01 1 1 1 1 1 I= 127,,
1 0 0 0 0 0 0 0 = -128,,
I 0 0 0 0 0 0 1 = -127,,
1 0 0 0 0 0 1 0 = -126,,

1 1 1 1 1 1 I O = -2,, Figure 8-8. Signed
1 1 1 1 1 1 1 1 = -I1, binary numbers

-

0001 101 1, 1 I- 1 1001 01,

-128,, +101,, = -2710

Figure 8-9. Comparison of positive and negative signed binary numbers