
Primary storage (memory)
Explain RAM, ROM, cache and virtual memory using comparisons and a staged memory simulation.
- The purpose and characteristics of RAM and ROM
- Cache and the role of virtual memory
- Memory comparisons, scenarios and exam practice
PowerPoint teaching pack
Teach the complete unit with seven editable PowerPoints. Visual modelling, worked calculations and guided activities take learners from memory and storage to data representation and compression.
For school teaching, private tuition and guided home education.

7
PowerPoints
205
Editable slides
1
Complete unit pack
A clear route through unit 1.2
Present, pause for practice, reveal and discuss. Adapt the pace and editable slides to your learners.

Explain RAM, ROM, cache and virtual memory using comparisons and a staged memory simulation.

Compare optical, magnetic and solid-state storage, then justify choices for different users and situations.

Move from bits and bytes to capacity calculations, with worked examples for text, image and sound files.

Model number-base conversions, binary addition, overflow and shifts with examples learners can work through.

Connect character codes and character sets to ASCII, Unicode and the number of bits needed to store text.

Explore pixels and digital audio, then connect quality choices to the amount of data stored.

Compare lossy and lossless compression, inspect image-quality trade-offs and justify choices for real situations.
Look before you choose
Choose any of the seven PowerPoints, browse its cover and teaching sample, and enlarge the slides. Fourteen real previews show the explanations, worked calculations and visual comparisons.
Topic opening
Slide 1 of 30 · Preview 1 of 2
These are real slides from the pack. Website previews are still images; click-to-reveal answers and animations run in PowerPoint Slide Show mode.
Prepare with confidence
Visual explanations, worked examples and click-to-reveal sequences help you guide the discussion.
Speaker notes throughout support questioning and delivery. Use the vocabulary, retrieval and misconception checks as you teach.
Foundation, Secure and Stretch tasks sit alongside command-word guidance, exam practice and mark schemes in every deck.
Download all seven editable PowerPoints in one ZIP, with a read-me file and a secure online quick-start guide.
Use Microsoft PowerPoint for the intended animation and answer reveals. Read the speaker notes before teaching, and spread each topic across sessions as needed.
The complete pack covers unit 1.2. Each licence includes all seven PowerPoints. Other OCR units are listed separately.
Before you purchase
Yes. The individual learner price of £24.99 / AED 125 covers the complete unit 1.2 pack with all seven PowerPoints, 205 slides and the pack guide. Tutor and department licence prices also apply to the complete pack. You choose the licence for your setting; there is no separate charge for each deck.
This is OCR GCSE Computer Science J277, Component 01 / Paper 1: Computer systems, unit 1.2 Memory and storage. It covers sections 1.2.1 Primary storage, 1.2.2 Secondary storage, 1.2.3 Units, 1.2.4 Data storage and 1.2.5 Compression. Numbers, characters, and images and sound are three teaching decks within official section 1.2.4. The a/b/c letters in their filenames organise those parts.
One ZIP download contains the seven original editable .pptx files and a read-me file. There are 205 slides with speaker notes throughout, including 145 slides with animation. Each deck includes activities, exam practice with answers and a one-page knowledge organiser. Your secure resource area also includes an online quick-start guide.
The teaching content is the same. Choose Individual learner for one named student, Tutor / single teacher for one educator with their own students, or School / department for multiple educators in one school department. Price and sharing permissions depend on the licence. Every option includes all seven PowerPoints.
Yes, with a parent or tutor guiding the learning. Work through the explanations, pause for learners to attempt the tasks and calculations, then reveal and discuss the answers. Pacing is flexible, so a topic can run across more than one session. The pack is a guided teaching resource.
Use Microsoft PowerPoint in Slide Show mode for the intended animations, answer reveals and route-map navigation. Click or press the space bar to move through the reveals. Other presentation viewers may change the layout or interactions. Editing view can expose answers, so present in Slide Show mode when teaching.
The focus is why compression is useful, lossy and lossless compression, their benefits and limitations, and choosing between them. The deck labels its lossless-method demonstration as for understanding only. OCR does not require learners to carry out a specific compression algorithm.
Choose your licence and send the pre-filled enquiry. We confirm permitted use, the price and payment details before payment. After payment is confirmed, the pack is made available through your secure My Resources account. The complete teaching files are delivered privately.
LogicPath Education is an independent resource provider and is not endorsed by or affiliated with OCR. The public samples are images from the supplied PowerPoints; the complete teaching files are delivered privately.
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