topic 4 Flashcards
(14 cards)
what is a system
a group of components that interact to achieve a specific purpose
what components does an it system compose of
- hardware
- software
- people
- processes
what is the system HARDWARE?
it is the physical components of a computer.
its role is to Processes data, stores information, and allows communication between devices.
ex: keyboard, mouse, printer
what is the system SOFTWARE
group of programs and instructions that tell hardware what to do.
Runs applications, manages hardware, and enables user interaction.
ex: application software, operating systems
what is the system PROCESSES
The steps or actions IT systems follow to complete a task.
Ensures smooth operation by managing workflows and data movement.
✅ Logging into an email account.
✅ Online shopping checkout process.
what is the it system PEOPLE
The users, administrators, and IT professionals who design, maintain, and use the system.
✔ Users input data, make decisions, and ensure IT systems meet business needs.
what is decomposition
breaking down the system into smaller subsystem parts
why decompose a system?
✅ Easier to manage.
✅Easier to understand relationships among subsystems.
✅Easier to find and fix problems in specific parts.
what is fitness for purpose
where the device should be able to perform its function for which it has been bought for
what is a dataflow diagram
a visual representation of how data moves through a system.
DFDs make complex systems easier to understand.
what is a flowchart
a visual representation of a process using symbols and arrows.
✅ Flowcharts simplify problem-solving and decision-making.
ads and disads of it systems for individuals
🔹 Easy communication (email, video calls, social media)
🔹 Access to information & services (banking, shopping)
🔹 Remote work and flexible learning
🔹 Entertainment and social connection
🔸 Risk of cyberbullying, scams, and addiction
🔸 Less face-to-face interaction
🔸 Job losses due to automation
🔸 Privacy concerns (tracking, targeted ads)
ads and disads of it systems for organizations
🔹 Faster communication and collaboration (Teams, Slack)
🔹 Increased productivity and automation
🔹 Cost savings (less paperwork, online services)
🔹 Data storage, analysis, and backup
🔸 Data breaches and cyberattacks
🔸 Dependence on IT systems — failure = disruption
🔸 Initial setup and maintenance costs
🔸 Requires constant updates and staff training
Use of Digital Devices to meet the needs of individuals and orgs
Desktop/Laptop Used for work, school, communication, design, programming.
Tablets & Smartphones
Portable access to internet, apps, cameras, and tools.
Servers Host websites, store data, run apps for organisations.
Wearables (e.g. smartwatches) Monitor health, give alerts, track activity.
Device | Use in IT Systems |
