decimal in eight bit two complements: −3++ 11 +125 +− 40 +5 +− 7

[samkop]

decimal in eight bit two complements: −3++ 11 +125 +− 40 +5 +− 7

[FONT=&quot]Write the following decimal numbers in eight bit two’s complement, do the addition/subtraction, convert your answer back to decimal.[/FONT]

• −3++ 11
• +125 +− 40
• +5 +− 7

 

[Dr.Peterson]

Write the following decimal numbers in eight bit two’s complement, do the addition/subtraction, convert your answer back to decimal.

• −3++ 11
• +125 +− 40
• +5 +− 7

Before we can help, we really need to know what help you need. Do you know what eight-bit twos complement is? Are you having trouble converting in one direction or the other? Can you add in this form? Please show what you can do, or at least ask a specific question about it. Don't just ask others to do your work for you.

 

[HallsofIvy]

[FONT=&quot]Write the following decimal numbers in eight bit two’s complement, do the addition/subtraction, convert your answer back to decimal.[/FONT]

• −3++ 11
• +125 +− 40
• +5 +− 7

Am I correct that "-3++ 11" means "-3+ (+11)", that "+125+- 40" means "125+ (-40)" and that "+5+- 7" means "+5+ (-7)"?