*From*: "John Doe" <JohnDoe4u2@xxxxxxxxxxx>*To*: <24hoursupport@xxxxxxxxxxxxx>*Date*: Fri, 3 May 2002 22:08:55 -0500

----- Original Message ----- From: <Lpagsugu@xxxxxxx> To: <24hoursupport@xxxxxxxxxxxxx> Sent: Friday, May 03, 2002 8:47 PM Subject: [24hoursupport] Binary, Octal, and Hex help needed! :) > Hi, I'm really confused about two's complement and octal. > > 1.) In two's complement, how can using the opposite and adding one change a > number into the negative? > > 2.) If octal 7 is 111 in binary, what is 8 and 9? Conversion is similar from decimal to binary. The difference being the number of digits used. 8 in binary is 1000 while in octal it is 10. 9 in binary is 1001 while in octal it is 11. > > I have some sample problems and I'll show you my answers for some of them. > Please let me know if I'm on the right track or not. Thanks! > > a.) > Decimal: 37 > Binary: 100101>>>>>>correct. 32+4+1=37 > Octal: 45>>>>> 8+8+8+8+5 correct > Hex: 25>>>>>correct 15+15+5=37 > > b.) > Decimal: -8 > Binary: 1000>>>>correct 8+0=8 > Octal: 1 >>>> should be 10. 8+2=10 > Hex: 8>>>>correct > > c.) > Decimal: 10 > Binary: 1010>>>>correct 8+2=10 > Octal: 12 >>>> correct 8+2=10 > Hex: A >>>> correct > > d.) > Decimal: -53 > Binary: 001011 (101011) (typo) >>>32+16++4+1=53 > Octal: 13 >>> if decimal 10 is octal 12 how can this be correct? 8+8+8+8+8+8+5=53. so it should be 65 > Hex: B >>>> not possible with only one digit. 16+16+11 so it should be FFB > > Thank you again for your help! > Lene > Just remember what base you're using. Then do as I did to come up with your answer. add 8 or a6 as needed and that will give you the first number. The remainder is then added. - Users can unsubscribe from this list by sending email to 24hoursupport-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field OR by logging into the Web interface at http://web.tampabay.rr.com/spider1/24hrsupport.htm.

**References**:**[24hoursupport] Binary, Octal, and Hex help needed! :)***From:*Lpagsugu

- » [24hoursupport] Binary, Octal, and Hex help needed! :)
- » [24hoursupport] Re: Binary, Octal, and Hex help needed! :)
- » [24hoursupport] Re: Binary, Octal, and Hex help needed! :)