OCR GCSE COMPUTER SCIENCE EXAMS COMPILATION BUNDLE

CPU Central Processing Unit: The main part of the computer, consisting of the registers, ALU and control unit. Von Neumann Architecture Traditional computer architecture that forms the basis of most digital computer systems. Instructions are fetched, decoded and executed one at a time. ...

List two components with which the CPU works to execute program instructions. Memory Input and Output Devices Describe the role of the Control Unit in the fetch-decode-execute cycle. The control unit coordinates the actions of the computer. It sends out control signals to other parts of th...

What does the CPU stand for? The Central Processing Unit. What is the CPU? The brain of the computer system. Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen What does the CPU do? Process all the data and ...

What is a network? A network is a set of connected computers and other devices in order to share resources. This includes files, application software and hardware. What are the two types of network? LAN and WAN What is a LAN? Local Area Network - covers a small geographical area ...

Define what is meant by abstraction. Abstraction means removing unnecessary details to focus on the important elements. What is an algorithm? An algorithm is a step-by-step procedure for solving problems. Brainpower Read More Previous Play Next Rewind 10 seconds Move forward ...

What is the purpose of systems software? Software designed to run or maintain a computer Describe the functionality of systems software. It controls the operations of computer hardware Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute ...

Primary Memory Memory that can be addressed and accessed directly by the processor. 2 types of primary memory ->RAM (Random Access Memory) -> RAM (Read Only Memory) Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:03 / 0:15...

Arithmetic Logic Unit (ALU) Performs operations on data e.g. Addition, subtraction Control Unit (CU) Coordinating activities of the CPU Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen Registers Quick, sma...

Computational thinking The steps you take to find rhe best solution to a complex problem Three key techniques for computational thinking Decomposing - breaking down into smaller problems and solving individually Abstraction - picking out the important bits Algorithmic thinking - logical w...

TCP This sets how devices communicate on a network, responsible for splitting the data into packets and reassembling the packets into the original order once they reach the desired device. IP The protocol responsible for packet switching. Brainpower Read More Previous Play Next...

Computer A machine that processes data. Embedded Systems Computers built into other devices, like dishwashers, microwaves and TVs. Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:11 / 0:15 Full screen CPU Known as the 'brain...

COMPUTER SCIENCE OCR GCSE COMPONENTS OF A COMPUTER SYSTEM EXAM QUESTIONS AND ANSWERS

GCSE OCR COMPUTER SCIENCE NETWORKS EXAM QUESTIONS FULLY SOLVED.

What is a stand-alone computer? a computer that is not connected to a network What is a network? two or more electronic devices that are connected together. They can be wired or wireless Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute...