
T1 Rappresentazione numerica
Authored by Renato Ferrero
Computers
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tre dei seguenti numeri hanno lo stesso valore. Quale è diverso?
1373 oct
1011111011 bin
753 dec
2FB hex
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual è la rappresentazione di -25 in complemento a due su 6 bit?
101101
100111
000111
-25 non è rappresentabile su 6 bit
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
10110001 assume diversi valori decimali se interpretato come binario puro, M&S, CA2. A quale valore non corrisponde?
177
-49
-59
-79
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dato il numero esadecimale ABCD in CA2, qual è il suo valore assoluto (modulo)? Suggerimento: operare in base 2, poi convertire in esadecimale.
ABCD
3A2E
7A2F
5433
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se il risultato dell'operazione 11110101 + 01101101 è espresso su 8 bit, si verifica overflow?
overflow in binario puro, no overflow in CA2
overflow in CA2, no overflow in binario
c'è sempre overflow
non c'è mai overflow
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual è il risultato dell'operazione 001011 – 010110, considerando i numeri in CA2?
00101
110101
1000101
l'operazione non può essere eseguita
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Avendo a disposizione 6 bit, quale affermazione è vera?
in un qualunque sistema di codifica, posso rappresentare 64 oggetti diversi
in binario puro, posso rappresentare il numero 64
in modulo e segno, posso rappresentare il numero +32
in complemento a due, posso rappresentare il numero +32
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