Years 7–8 Digital Systems

These are free worksheets for the Digital Systems strand of the Victorian Curriculum Digital Technologies, Levels 7–8: choosing hardware for a task, how networks transmit and protect data, and how to defend accounts against cyber threats.

This page lists the 24 modules written for Years 7–8: CPU clock speed and cores, HDD vs SSD, storage units, performance bottlenecks, reading a spec sheet, and choosing and justifying hardware for school work, video editing or gaming; comparing wired and wireless networks, Wi-Fi range and interference, HTTPS and securing a Wi-Fi network; and data breaches, authentication factors and MFA, spotting phishing messages and fake websites, smishing and vishing, social engineering and responding to a suspected compromise. Each module includes real practice questions and a full answer key.

The Years 7–8 journeys below also reuse Years 5–6, Issues in Technology and VCE Cyber Security modules where the topic is the same, so each journey is a complete course. Teachers can assign the whole strand, or one content description at a time, with progress tracking, class sprints and badges.

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Hardware for particular tasks — VC2TDI8S01 (10 modules)

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CPU clock speed (GHz) How many billions of cycles per second a CPU can run. A higher GHz usually means faster single tasks, but it is not the only measure of speed.
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CPU cores One processing unit inside a CPU. A dual-core, quad-core or octa-core CPU has 2, 4 or 8 cores, so it can work on separate tasks at the same time.
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HDD vs SSD performance Storage with no moving parts. It reads and writes data much faster than an HDD, so computers boot and load quicker. It is tougher but usually costs more per GB.
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Storage units: KB, MB, GB, TB Units of storage size built on the byte. Each unit is about 1000 times bigger than the one before: 1 KB, then 1 MB, then 1 GB, then 1 TB. Use them to check if files fit on a drive.
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Performance bottlenecks The slowest part of a computer system, which limits how fast the whole system can work, like a slow hard drive or too little RAM holding back a fast CPU.
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Reading a hardware specification sheet A list of a device's parts and their ratings, like CPU model, GHz, cores, RAM, storage type and size, and GPU. Use it to find each spec and compare two devices side by side.
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Hardware for everyday school and office tasks Browsing, word processing and slides need only a modest CPU, enough RAM for a few open apps, and little storage, so a light laptop with good battery life works well.
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Hardware for graphics and video editing The parts a computer needs to edit images and video: a strong CPU, a dedicated GPU, lots of RAM and large fast storage, so big files open and render quickly.
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Hardware for gaming A gaming computer relies most on a powerful GPU, plus enough RAM and a fast CPU, to keep the frame rate smooth. An SSD cuts load times and good cooling stops overheating.
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Justifying a hardware recommendation A hardware choice backed by reasons: name the task, pick the specs that matter for it, and explain why they fit the budget, often by comparing two options.

Just this content description: the Hardware for particular tasks journey · Add VC2TDI8S01 to a class →

Data transmission and network security — VC2TDI8S02 (4 modules)

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Comparing wired and wireless networks Wired links are usually faster, more reliable and more secure. Wireless links are more mobile and convenient. Choose the one that best suits the situation.
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Wi-Fi range and interference How far a Wi-Fi signal reaches. It gets weaker with distance and walls, and interference from other devices on crowded channels can slow or drop your connection.
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HTTPS and the padlock A secure way for your browser to talk to a website. It encrypts the data you send and receive, and shows https:// and a padlock in the address bar. A padlock does not prove a site is trustworthy.
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Securing a Wi-Fi network The newest Wi-Fi security standard. With a strong password it scrambles data in the air so outsiders can't read it. WPA2 is the older version. Open networks have no protection at all.

Just this content description: the Data transmission and network security journey · Add VC2TDI8S02 to a class →

Account security and cyber threats — VC2TDI8S03 (10 modules)

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Data breach When attackers get into an organisation's stored data, such as usernames and passwords. Find out through alerts, then change your password and turn on MFA.
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Authentication factors A type of proof that you are who you say you are: something you know (password, PIN), something you have (phone, key), or something you are (fingerprint, face).
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Types of MFA Ways to prove it's you: an SMS code, an authenticator app, a biometric like a fingerprint, or a physical security key. They differ in how easy they are to use and how strong they are.
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How MFA protects an account when the password is stolen An extra proof of identity, like a code from your phone, needed after the password. A thief with only your stolen password can't log in without it.
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Limits of MFA A trick where a scammer spams you with login prompts hoping you approve one, or talks you into sharing your code. Never share codes, never approve prompts you didn't start, and report them.
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Spotting the signs of a phishing message Warning signs that a message is a scam: an odd sender address, urgent or threatening tone, a generic greeting like 'Dear user', spelling errors, or requests for your details.
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Checking links and fake websites A link whose shown text hides a different real web address. Hover to check the address before you click or log in, watch for look-alike names, or type the address yourself.
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Smishing and vishing Smishing is phishing by text message and vishing is phishing by phone call. Examples are a fake delivery text or a fake bank call that tries to trick you into sharing private details.
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Social engineering Tricking people, instead of hacking systems, into giving away access or information, often by pretending to be someone trusted or creating urgency. Phishing is one type.
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Responding to a suspected compromise If an account or device may be hacked, act fast: tell a trusted adult, change the password, turn on MFA and check for odd activity. Also report phishing, change shared passwords and scan for malware.

Just this content description: the Account security and cyber threats journey · Add VC2TDI8S03 to a class →

Printable Years 7–8 Digital Systems Crosswords & Word Searches

Built from the key terms of each block of modules, every one with a full answer key. All free printables →

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Crossword: Hardware for particular tasks (Modules 4–19) 10 clues · CPU clock speed (GHz), CPU cores, HDD vs SSD performance, Storage units: KB, MB, GB, TB and more
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Crossword: Data transmission and network security and Account security and cyber threats (Modules 26–74) 10 clues · Comparing wired and wireless networks, Wi-Fi range and interference, HTTPS and the padlock, Securing a Wi-Fi network and more
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Word Search: Hardware for particular tasks to Account security and cyber threats (Modules 4–74) 20 words to find · CPU clock speed (GHz), CPU cores, HDD vs SSD performance, Storage units: KB, MB, GB, TB and more

Journeys using these modules

7-8 Digital Technologies Vic Curric - Digital Systems and Security, 9-10 Digital Technologies Vic Curric - Digital Systems and Security, VCE Software Development - U4O2 - Cyber Security: secure software development practices, VCE Data Analytics - U4O2 - Cyber Security: Data Security, 7-8 Digital Technologies: Representing data with binary, 9-10 Digital Technologies: Data compression, 9-10 Digital Technologies: Data privacy and the Australian Privacy Principles, IGCSE Computer Science 0478 — 3.1 Computer Architecture, IGCSE Computer Science 0478 — 5.1 The Internet and the World Wide Web, IGCSE Computer Science 0478 — 5.3 Cyber Security, ACARA Digital Technologies Years 5–6 — Networks and Sharing Data, ACARA Digital Technologies Years 5–6 — Staying Safe Online, ACARA Digital Technologies Years 7–8 — Hardware and Performance, ACARA Digital Technologies Years 7–8 — Wired and Wireless Networks, ACARA Digital Technologies Years 7–8 — Networks and Cyber Threats, ACARA Digital Technologies Years 9–10 — Networked Systems and Access Control, ACARA Digital Technologies Years 9–10 — Data Compression, ACARA Digital Technologies Years 9–10 — Cyber Security Threats and Vulnerabilities, ACARA Digital Technologies Years 9–10 — Privacy Principles and Digital Footprints, QCE Digital Solutions Unit 4 — Digital Methods for Exchanging Data, QCE Digital Solutions Unit 4 — Complex Digital Data Exchange Problems and Solution Requirements, WA Computer Science ATAR Year 11 — Network Communications, WA Computer Science ATAR Year 11 — Data Management, WA Computer Science ATAR Year 11 — Cyber Security

Or build your own Journey from any of these modules →

Frequently Asked Questions

Are these worksheets free?

Yes — every worksheet and its answer key is free to view, download, and print, with no account required to access any individual module.

Do I need an account?

No account is needed to view or print a worksheet. A free teacher account adds extras like assigning modules to a class and tracking progress automatically — it takes under three minutes to set up and doesn't need a credit card.

What year level is this for?

Years 7 and 8 — the modules follow Victorian Curriculum Digital Technologies, Levels 7–8.

Can I print them?

Yes — every module has a one-click Print Worksheet button that generates a printable page with the practice questions and a full answer key.

Is this aligned to a curriculum?

Yes — the modules are grouped by the Levels 7–8 Digital Systems content descriptions of the Victorian Curriculum Digital Technologies (VC2TDI8S01–VC2TDI8S03). The Years 7–8 journeys also reuse Years 5–6 and VCE modules where the topic is the same.

Can students use this without a teacher?

Yes — students can start any module and practice directly, no class or account required. Joining a teacher's class with a class code adds progress tracking, class badges, and live Sprints, but isn't needed to work through the worksheets or modules solo.

Do I need to know Years 7–8 Digital Systems myself to teach this?

No — every module comes with a full worked answer key, and Cloodit tracks who's stuck automatically, so you don't need to solve each exercise yourself before assigning it or be able to debug a student's work line by line.

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