Two's Complement: 8-bit Arithmetic - 8710 - 2910

[naspek]

Homework Statement

Perform the following arithmetic operation using 8-bit
two's complement

a) 8710 - 2910

The Attempt at a Solution

i just want to know.. am i converting the number correctly?

89 = 0101 1001
-29 = 1110 0011

 

[CompuChip]

Yep, you did that correctly.

 

[naspek]

thanks.. =)

 

[Mark44]

Homework Statement

Perform the following arithmetic operation using 8-bit
two's complement

a) 8710 - 2910

One quibble: you wrote 87 above, but worked with 89 below.

The Attempt at a Solution

i just want to know.. am i converting the number correctly?

89 = 0101 1001
-29 = 1110 0011