Memory and Storage

OCR J277 memory and storage revision notes covering RAM, ROM, cache, secondary storage, units, data storage, and compression.

Study guides

1.2.1

Primary Storage (Memory)

Clear revision notes covering primary storage for OCR J277, including RAM, ROM, cache, the bootstrap loader, and virtual memory.

8 questions 18 flashcards

1.2.2

Secondary Storage

Clear revision notes covering secondary storage for OCR J277, including magnetic, optical, and solid state storage plus advantages, disadvantages, and exam scenarios.

8 questions 26 flashcards

1.2.3

Units

Clear revision notes covering bits, bytes, binary, data capacity, and file size calculations for sound, images, and text for OCR J277.

8 questions 19 flashcards

1.2.4a

Data Storage (Numbers)

Clear revision notes covering denary, binary, hexadecimal, overflow, and binary shifts for OCR J277.

8 questions 21 flashcards

1.2.4b

Data Storage (Characters, Images, Sound)

Clear revision notes covering character sets, bitmap images, sound sampling, metadata, and how quality links to file size for OCR J277.

7 questions 19 flashcards

1.2.5

Compression

Clear revision notes covering why compression is used and the difference between lossy and lossless compression for OCR J277.

6 questions 9 flashcards