OCR H446 ยท Component 01
1.4.1 Data types
Variables, constants, primitive data types, casting, number bases, binary arithmetic, negative numbers, shifts, masks, units, character sets, and floating point representation.
Topic overview
Build accurate recall, then apply it.
RecallStride combines active flashcards, quick checks, exam practice and scheduled review. Progress is based on learning evidence rather than passive completion.
- Represent denary 182 as an eight-bit unsigned binary integer. Show the place values used.Convert
- Represent positive denary 125 in hexadecimal, showing the quotient and remainder.Convert
- Convert binary 10110110 to hexadecimal, then verify its denary value.Convert
- Represent -19 using eight-bit sign and magnitude and eight-bit two's complement.Convert
- Add 01100100 and 00101101 as eight-bit two's-complement numbers. Is the stored result valid?Apply
- A format has a five-bit two's-complement mantissa with the binary point after the sign bit, followed by a four-bit two's-complement exponent. Decode 10100 0011.Convert
Published with owner authorisation; awaiting independent academic review. RecallStride is independently produced and is not endorsed by OCR. OCR is a registered trademark of OCR.