1. What is digital abstraction?, Using discrete values instead of continuous physical values, xz, 2. What two values are used in digital systems?, 1, 0 and 1, 3. What is a bit?, A binary digit, achko, 4. What does 1 represent in digital logic?, LOW, TRUE / HIGH, 5. What does 0 represent in digital logic?, FALSE / LOW, 0, 6. Who introduced Boolean logic?, George Boole, tvoy pedaras malim, 7. Which logic operations did George Boole introduce?, AND, OR, NOT, am, is, are, 8. Who introduced Hindu-Arabic numerals to the West?, Al-Khwarizmi, Al-Beruniy, 9. The word “algorithm” comes from whose name?, Algebra, Al-Khwarizmi, 10. What base does the decimal number system use?, Base 10, Base 5, 11. What base does the binary number system use?, Base 2, Base 4, 12. Which digits are used in binary numbers?, 0 and 1, 0 and 10, 13. What base does the hexadecimal system use?, Base 16, Base 1, 14. Which symbols are used in hexadecimal numbers?, 0 and A, 0–9 and A–F, 15. What is the value of 2⁰?, 1, 0, 16. What is the value of 2¹?, 2, 4, 17. What is the value of 2²?, 4, 16, 18. What is the value of 2³?, 18, 8, 19. How do you convert a binary number to decimal?, Multiply each bit by powers of 2 and sum the results, Multiply each bit by powers of 6 and sum the results, 20. How do you convert a decimal number to binary?, Repeated division by 8, Repeated division by 2, 21. What is the decimal value of 10011₂?, 19, 37, 22. What is the binary representation of 47₁₀?, 101111, 471000, 23. How many bits are in a nibble?, 4, 8, 24. How many bits are in a byte?, 16, 8, 25. How many values can 4 bits represent?, 16, 18, 26. What is overflow in digital systems?, When a result is too large to fit in the available number of bits, When a result is too small to fit in the available number of bits, 27. Why does overflow occur?, Because digital systems use a fixed number of bits, а тебя это ебать не должно, 28. What is sign/magnitude representation?, A representation using one sign bit and magnitude bits, A representation using 3 signs bit and magnitude bits, 29. What does the sign bit represent?, The sign of the letter, The sign of the number, 30. What sign bit value indicates a positive number?, 0, achko, 31. What sign bit value indicates a negative number?, 0, 1, 32. What is one major problem with sign/magnitude numbers?, Two representations of zero, Two representations of numbers, 33. What is two’s complement used for?, Representing signed binary numbers, Representing signed non-binary numbers, 34. How many representations of zero exist in two’s complement?, 1, 2, 35. What does the most significant bit represent in two’s complement?, The sign of the number, The sign of the zero, 36. What is the range of an N-bit two’s complement number?, −2ⁿ⁻¹ to 2ⁿ⁻¹ , −2ⁿ⁻¹ to 2ⁿ⁻¹ − 1, 37. How do you take the two’s complement of a binary number?, Invert all bits and add 1, Invert all bits and add 0, 38. What is the two’s complement of 0011?, 1101, 1100, 39. What is sign-extension?, Copying the sign bit into the new most significant bits, xuy, 40. What is zero-extension?, Filling new most significant bits with zeros, Filling new least significant bits with oness, 41. Does sign-extension change the value of a number?, yes, no, 42. Does zero-extension change the value of negative numbers?, no, yes.

Binary Systems / Computer Systems (Unit 1).

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