Binary Digits HELP PLZ!!!

[Liquido]

Kalispera paidia! Exw anagkh kapion pou na kserei na apantisei tis parakatw erwtiseis :

 

 

Question 1 (2 points)

 

Which of these is a two’s complement 8-bit binary positive number? Select one only (2 marks).

Student

Response Answer Choices

a. 0001 1011

b. 1001 1011

c. 1010 0001

d. 1101 1001

e. 1111 1000

 

 

 

 

 

 

Question 2 (2 points)

 

Which of these two’s complement 8-bit binary numbers is equal to –2310?

Select one only (2 marks).

Student

Response Answer Choices

a. 1110 1001

b. 0001 0111

c. 0010 1111

d. 1111 0101

e. 1110 1011

 

 

 

 

 

 

Question 3 (2 points)

 

Which of these two’s complement 8-bit binary numbers is equal to 1510?

Select one only (2 marks).

Student

Response Answer Choices

 

a. 0000 1111

b. 0001 0001

c. 0010 1111

d. 1111 0001

e. 1110 1111

 

 

 

 

 

 

Question 4 (2 points)

 

Which of these two’s complement 8-bit binary numbers is equal to –12610?

Select one only (2 marks).

Student

Response Answer Choices

a. 1000 0010

b. 0111 1110

c. 0111 1101

d. 1111 0101

e. 1000 0001

 

 

 

 

 

 

Question 5 (2 points)

 

Which of these is the largest possible positive two’s complement 8-bit binary number?

Select one only (2 marks).

Student

Response Answer Choices

a. 0111 1111

b. 1000 0000

c. 0000 1111

d. 1111 1111

e. 1000 0001

 

 

 

 

 

 

Question 6 (2 points)

 

These 2-digit HEX numbers represent two’s complement 8-bit binary numbers. Which of them is negative?

Select one only (2 marks).

Student

Response Answer Choices

a. F8

b. 1A

c. 21

d. 5F

e. 78

 

 

 

 

 

 

Question 7 (2 points)

 

These 2-digit HEX numbers represent two’s complement 8-bit binary numbers. Which of them is equal to –310?

Select one only (2 marks).

Student

Response Answer Choices

a. FD

b. FF

c. 0D

d. 03

e. 69

 

 

 

 

 

 

Question 8 (2 points)

 

These 2-digit HEX numbers represent two’s complement 8-bit binary numbers. Which of them is equal to the largest possible negative number (the most negative number possible)?

Select one only (2 marks).

Student

Response Answer Choices

a. 80

b. FF

c. 70

d. 00

e. 8F

[spock]

Κατ'αρχήν, τα έχεις κάνει μαντάρα! Για παράδειγμα, στην ερώτηση 4, το -12610 ΔΕΝ είναι -12610 ΑΛΛΑ -12610... με το τελευταίο 10 subscript, όπερ σημαίνει decimal number (αριθμός του δεκαδικού συστήματος)! Μου πήρε κάμποση ώρα να το καταλάβω...

Οι απαντήσεις:

1: a

2: a

3: a

4: a

5: a

6: a

7: a

8: a

Μπορεί να φαίνεται περίεργο που είναι όλες οι απαντήσεις a, αλλά αν θες μπορώ να στις εξηγήσω...

[KaizerSoze]

variemai na ta kanw ola alla xontrikes symvoules me mpakalikous orous:

 

oi dyadikoi thetikoi exoun 0 mprosta,oi arnitikoi 1

To symplirwma tou 1(one's complement) einai o kanonikos dyadikos me anestramena ta psifia

To symplirwma tou 2(two's complement) prokyptei apo to symplirwma tou 1 an prostheseis ton dyadiko 1(pou einai diladi 0000..001)

 

edit:Den eida to post tou spock,sorry.

[Liquido]

Eyxaristw poli gia tin voitheia sas!

Itan swstes oi apantiseis!

[spock]

No problem. Μόνο, κάτσε και μάθε τη θεωρία, γιατί, αν θες να πας παρακάτω σε low level προγραμματισμό κτλ... αυτά είναι η αλφαβήτα...