01101001 0 and 255 65,535 binary data 8 bits bits odd least significant text files transistor 511 even Byte most significant The key electronic component that you will find in any computer system is called a . The CPU of…
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View All QuizzesGCSE Computer Science (UK)
1.1 System Architecture 1.2 Memory and Storage 1.3 Computer networks 1.4 Network security 1.5 – Systems software 1.6 – Impacts of digital technology2.1 – Algorithms 2.2 – Programming fundamentals 2.3 – Producing robust programs 2.4 – Boolean logic 2.5 – Programming languages and IDEs
A-Level Computer Science (UK)
1.1 Contemporary processors, input, output and storage devices 1.2 Software and software development 1.3 Exchanging data 1.4 Data types, data structures and algorithms 1.5 Legal, moral, cultural and ethical issues2.1 Elements of computational thinking 2.2 Problem solving and programming 2.3 Algorithms
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Work Life Balance (HTML, CSS & JS Challenge)
When your browser displays a webpage on screen it uses 3 different programming languages called HTML, CSS and JavaScript. We call the combination of these three languages “client-side web technologies”. Each of the three language has its own syntax and…
The Birthday Paradox
The birthday paradox is based on a counter-intuitive fact that in any class of 23 students or more, there is a higher probability of having at least two students sharing the same bithday. Considering that there are 366 different possible…
Elastic Collision in a Pool Game
A range of video games use elastic collision formulas to predict the change of velocity of two objects when a collision occurs. Elastic collision occurs when two objects are colliding and the total kinetic energy of the two objects remains…
The Monty Hall Problem
The Monty Hall problem is a counter-intuitive brain teaser based on probabilities. This puzzle is named after Monty Hall, the TV presenter of “Let’s Make a Deal”, an American TV show (known as “Deal or No Deal” in the UK)…
Denary to Binary Conversion Algorithm
In this challenge, we are going to write al algorithm to convert a decimal (aka Denary) number between 0 and 255 into binary using 1 Byte (=8 bits). Before attempting this challenge you may practise your denary to binary conversion:…
Software Crosswords
A computer system consists of both hardware (the physical components of the computer) and software: the programs that run on this hardware. There are three main categories of software: Operating Systems: software that controls the computer hardware: The operating system…
Short Path Algorithm Practice
Before completing this task, you will need to familiarise yourself with the following 2 algorithms used to find the shortest path between two nodes of a weighted graph: Dijkstra’s Short Path Algorithm A* Algorithm Dijkstra’s Short Path Algorithm For each…
TCP/IP Stack: Network Layers and Protocols
The TCP/IP Stack is a model that governs how data is transmitted from one computer to another via an IP network such as the Internet. Internet communication includes using a web browser to access a webpage from a websever, sending…
Snow Poem Algorithm
The following algorithm is inspired by a poem by Brian Bilston called “snow poem”. On this poem, each word represents a snowflake gently and randomly falling from the sky. On the last verse of this poem, you can see how…
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