## BTEC National Diploma Computer Systems WorkbookThis workbook guides the student through all the learning activities required to meet the criteria for Unit 2: Computer Systems in the BTEC Nationals for IT Practitioners. The workbook is task-oriented and allows students to proceed at their own pace. |

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### Contents

Lesson Page 1 Introduction to binary | |

ASCII and logic gates | |

Halfadder and truth tables 12 | |

Binary arithmetic and binary conversion 13 | |

Binary Conversion octal and hexadecimal 23 | |

Computer memory 29 | |

Data in memory 32 | |

Parity boolean and binary Coded decimal 36 | |

Overflow underflow and floating point arithmetic 59 | |

Floating point addition and Subtraction 62 | |

Floating point multiplication and division 1 71 | |

Disassembly of a PC 76 | |

CPU and motherboard 80 | |

PC components and peripherals 1 83 | |

Building a Computer to a specification 1 92 | |

Low level programming 1 99 | |

Binary Coded decimal and Colour 41 | |

Colour computer arithmetic and twos complement 45 | |

Binary addition and subtraction 50 | |

Integers real numbers and floating point numbers 54 | |

Bit mask and operating systems 114 | |

### Common terms and phrases

2's complement 2"Number ADD R1 addition and subtraction arithmetic and binary arithmetic and two's ASCII and logic Assemble Assembly Language Binary addition Binary arithmetic binary coded decimal binary conversion continued Bit mask byte components and peripherals Convert both numbers Convert the following cubby hole Decimal Number decimal point digits display enter the number Fixed Point Floating point addition Floating Point Arithmetic floating point numbers following binary numbers getlnt Hex Editor instruction integer Lesson 15 Lesson 28 logic gates continued Logic Simulator Low-level programming Macromedia Shockwave mask and operating Motherboard myString Number Step numbers to binary octal and hexadecimal operating systems continued Output parity bit PC components program and enter real numbers Real-time operating system Register Run the program second number ſº Step 2 StepS subtraction continued SWI getChar SWI getInt Total Truth Table two's complement Valve Valve4 Windows 98 Witness Date Task