Worksheet library · A Level
Component 1: Computer Systems A Level Computer Science Worksheets, Questions and Revision
10 original Component 1: Computer Systems worksheet packs - 128 printable pages with full mark schemes. Processor architecture, software, data exchange, data structures and ethics. View any pack in the browser or open the print-ready PDF.
See the method: Structure and Function of the Processor
A processor has a clock speed of 2.5 GHz, and each instruction takes an average of 5 clock cycles to complete. Calculate the number of instructions the processor can execute in one second.
- Convert the clock speed to hertz: 2.5 GHz = 2.5 x 10^9 cycles per second.
- Divide the cycles per second by the number of cycles needed per instruction: 2.5 x 10^9 / 5.
- Calculate the result: 2.5 x 10^9 / 5 = 5 x 10^8.
- Final answer: the processor can execute 5 x 10^8 (500 million) instructions per second.
1.1 Structure and Function of the Processor5p + answers · 90 marks · PDF
1.2 Types of Software and Development Methodologies4p + answers · 129 marks · PDF
1.3 Exchanging Data: Databases, Networks and Web Technologies5p + answers · 117 marks · PDF
1.4 Data Types, Data Structures and Boolean Algebra8p + answers · 138 marks · PDF
1.5 Legal, Moral, Cultural and Ethical Issues5p + answers · 112 marks · PDF
1.6 Computer Architecture, Assembly and the LMC5p + answers · 93 marks · PDF
1.7 Boolean Algebra, Logic Gates and Karnaugh Maps7p + answers · 85 marks · PDF
1.8 Databases, SQL and Normalisation6p + answers · 104 marks · PDF
2.7 Object-Oriented Programming7p + answers · 127 marks · PDF
2.8 Recursion and Advanced Algorithms8p + answers · 107 marks · PDF
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