IB CS Topic 4.1

Needs attention and must be solved

• Problem

• Algorithm

• Situation

• Procedure

Series of unambiguous, finite step-by-step instructions designed to solve above

• Problem

• Procedural condition

• Algorithm

• Abstract

Dividing problems or sub-problems into smaller sub-problems

• Abstract

• Pre-planning

• Top-down design

• Post-condition

Repeating series of instructions within algorithm. Examples: for/from to loop, while loop

(a)  

Example of above. Consists of pre-formed elements and pre-written code, classes, procedures, methods, etc. that offer programmes additional and more efficient functionality to programs

• Software library

• Exception

• Output

• Pre-condition

Transferring data or instructions from memory to cache for when they are needed so that time is not wasted waiting for data from RAM.

(a)  

Bar chart for project management that shows tasks, activities, and events in relation to time. One bar for task, length of bar represents timeframe.

(a)  

Event that disrupts anticipated flow of program's execution. Can be handled by most modern programming language features.

• Pre-condition

• Post-condition

• Flow chart

• Exception

Execution of different instructions simultaneously by multiple processors in order to achieve most efficient performance. Example: "Pasta with sauce"

• Concurrent Processing

• Sequential processing

• Abstract thinking

• Procedural thinking

Reflecting on events, ideas, attributes, and relationships, ignoring details irrelevant to accomplish a goal.

(a)