Computer Science 0478

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1. 01

   Why computers represent data in binary

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2. 02

   Convert between denary and binary

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3. 03

   Use bit width and binary range

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4. 04

   Convert denary and hexadecimal

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5. 05

   Convert between binary and hexadecimal

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6. 06

   Add 8-bit binary integers and detect overflow

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7. 07

   Perform logical left binary shifts

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8. 08

   Perform logical right and repeated shifts

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9. 09

   Encode positive and negative integers in two’s complement

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10. 10

    Decode two’s complement and check its range

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11. 11

    Represent text with ASCII and Unicode

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12. 12

    Sample sound into binary

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13. 13

    Represent digital images with pixels

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14. 14

    Measure data in bits, bytes and binary prefixes

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15. 15

    Calculate image and sound file sizes

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16. 16

    Explain why data is compressed

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17. 17

    Compare lossy and lossless compression

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18. 18

    Encode repeated data with run-length encoding

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19. 19

    Read the structure of a data packet

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20. 20

    Explain packet switching and packet order

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21. 21

    Compare serial and parallel transmission

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22. 22

    Compare simplex, half-duplex and full-duplex

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23. 23

    Choose a transmission method for a scenario

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24. 24

    Explain how USB transmits data

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25. 25

    Understand errors after data transmission

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26. 26

    Use even and odd parity checks

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27. 27

    Extend parity across a byte or block

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28. 28

    Check transmitted data with a checksum and echo

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29. 29

    Use check digits to catch data-entry errors

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30. 30

    Recover transmitted data with ARQ

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31. 31

    Explain why transmitted data is encrypted

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32. 32

    Use symmetric encryption

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33. 33

    Use public and private keys

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34. 34

    Explain the role of the CPU and microprocessor

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35. 35

    Identify the main CPU units and registers

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36. 36

    Follow the address, data and control buses

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37. 37

    Trace the fetch–decode–execute cycle

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38. 38

    Compare CPU cores, cache and clock speed

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39. 39

    Understand a CPU instruction set

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40. 40

    Recognise embedded systems

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41. 41

    Choose an input device

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42. 42

    Choose an output device

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43. 43

    Use sensors to capture physical data

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44. 44

    Compare RAM and ROM as primary storage

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45. 45

    Distinguish primary and secondary storage

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46. 46

    Explain magnetic and optical storage

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47. 47

    Explain solid-state flash storage

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48. 48

    Explain virtual memory

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49. 49

    Explain cloud storage

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50. 50

    Compare cloud storage with local storage

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51. 51

    Distinguish system and application software

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52. 52

    Explain operating system functions

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53. 53

    Trace the hardware–firmware–operating system stack

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54. 54

    Recognise hardware and software interrupts

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55. 55

    Handle interrupts with an interrupt service routine

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56. 56

    Compare high-level and low-level languages

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57. 57

    Use assembly language and an assembler

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58. 58

    Explain how a compiler translates a program

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59. 59

    Explain how an interpreter runs a program

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60. 60

    Compare compilers and interpreters

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61. 61

    Use an IDE to write and test programs

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62. 62

    Distinguish the internet from the World Wide Web

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63. 63

    Read the parts of a web address

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64. 64

    Explain HTTP and HTTPS

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65. 65

    Explain what a web browser does

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66. 66

    Trace how a browser retrieves a web page

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67. 67

    Explain session and persistent cookies

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68. 68

    Describe digital currency and its uses

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69. 69

    Trace how a blockchain tracks transactions

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70. 70

    Recognise brute-force attacks and hacking

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71. 71

    Explain data interception and DDoS attacks

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72. 72

    Distinguish viruses, worms and Trojan horses

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73. 73

    Distinguish spyware, adware and ransomware

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74. 74

    Recognise phishing, pharming and social engineering

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75. 75

    Use access levels, authentication and privacy settings

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76. 76

    Apply anti-malware, updates and firewalls

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77. 77

    Protect links and connections with safe habits

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78. 78

    Trace an automated system's control loop

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79. 79

    Apply automated control to a real scenario

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80. 80

    Evaluate an automated system's trade-offs

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81. 81

    Define robotics and identify a robot

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82. 82

    Compare roles for robots in different sectors

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83. 83

    Define artificial intelligence

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84. 84

    Explain AI data, rules, reasoning and learning

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85. 85

    Trace an expert system

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86. 86

    Explain machine learning

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87. 87

    Choose between an expert system and machine learning

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88. 88

    Use the program development life cycle

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89. 89

    Analyse a problem and its requirements

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90. 90

    Decompose systems and problems

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91. 91

    Describe algorithms with inputs, processes, outputs and storage

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92. 92

    Design with structure diagrams

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93. 93

    Represent algorithms with flowcharts

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94. 94

    Write precise pseudocode

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95. 95

    Total and count values

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96. 96

    Find maximum, minimum and average values

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97. 97

    Search a list with linear search

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98. 98

    Sort a list with bubble sort

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99. 99

    Validate data with range and type checks

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100. 100

     Validate length, presence and format

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101. 101

     Use check digits to validate identification numbers

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102. 102

     Verify entered data with visual and double-entry checks

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103. 103

     Choose normal and abnormal test data

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104. 104

     Test extreme and boundary values

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105. 105

     Complete a trace table for an algorithm

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106. 106

     Identify and correct algorithm errors

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107. 107

     Write and amend an algorithm from a scenario

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108. 108

     Declare variables and constants

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109. 109

     Choose a basic data type

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110. 110

     Read input and display output

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111. 111

     Write a sequence with assignments

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112. 112

     Use arithmetic, relational and logical operators

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113. 113

     Select a branch with IF and CASE

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114. 114

     Repeat a fixed number of times

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115. 115

     Repeat while a condition is true

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116. 116

     Run a loop at least once

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117. 117

     Use totals and counts together

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118. 118

     Handle strings with built-in operations

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119. 119

     Use nested selection and iteration

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120. 120

     Break a program into procedures

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121. 121

     Return values from functions

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122. 122

     Use local and global variables

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123. 123

     Use DIV, MOD, ROUND and RANDOM

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124. 124

     Make a program maintainable

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125. 125

     Declare and use one-dimensional arrays

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126. 126

     Process a one-dimensional array with a loop

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127. 127

     Work with two-dimensional arrays

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128. 128

     Store program data in files

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129. 129

     Open, read, write and close files

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130. 130

     Read fields and records in a database table

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131. 131

     Turn storage requirements into fields

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132. 132

     Choose text and character data types

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133. 133

     Choose Boolean, numeric and date/time types

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134. 134

     Validate database field values

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135. 135

     Understand the purpose of a primary key

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136. 136

     Choose a suitable primary key from a table

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137. 137

     Read SELECT and FROM queries

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138. 138

     Select only the fields a user needs

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139. 139

     Filter records with WHERE

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140. 140

     Combine filters with AND

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141. 141

     Combine alternatives with OR

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142. 142

     Sort query results in ascending order

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143. 143

     Sort query results in descending order

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144. 144

     Count matching records with COUNT

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145. 145

     Add matching values with SUM

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146. 146

     Trace the output of a SQL query

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147. 147

     Complete a single-table SQL statement

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148. 148

     Design and query a single-table database

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149. 149

     Recognise standard logic gate symbols

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150. 150

     Apply the NOT gate

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151. 151

     Use AND and OR gates

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152. 152

     Use NAND and NOR gates

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153. 153

     Apply the XOR gate

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154. 154

     List input combinations for truth tables

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155. 155

     Evaluate Boolean expressions row by row

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156. 156

     Translate a problem statement into a Boolean expression

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157. 157

     Build a logic circuit from an expression

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158. 158

     Build a circuit from a problem statement

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159. 159

     Complete a truth table from a circuit

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160. 160

     Write an expression from a circuit

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161. 161

     Write an expression from a truth table

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162. 162

     Complete a truth table from an expression

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163. 163

     Derive a circuit from a truth table

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164. 164

     Respect Boolean circuit limits

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165. 165

     Connect statements, expressions, circuits and tables

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166. 166

     Unsigned binary representation

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167. 167

     Phishing and authentication

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168. 168

     Tracing loops and assignments

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These checks record your study activity and self-assessment, not a mastery score. Check the course coverage map for available lessons and remaining topics.