Example
Problem Statement:
A simple cash register has a display, an electrical wire with a plug, and a numeric
keypad which has keys for subtotal, tax, and total. This cash storage device has
a total key which triggers the release on the drawer. The numeric buttons simply
place a number on the display screen, the subtotal key displays the current total,
the tax key computes the tax, and the total key adds the subtotal and the tax. Write
a system to simulate the cash register described here.
Nouns (often helps to put adjectives also.)
- Cash Register
- Display
- Wire
- Plug
- Numeric Keypad
- Keys
- Device
- Total Key
- Release Drawer
- Numeric Buttons
- Subtotal Key
- Tax Key
- Screen
- Number
- Total Tax
Nouns (General Knowledge)
- 0-9 Keys
- Money
Eliminating Unnecessary Nouns
Cash Register
Display
Wire <--Irrelevant
Plug <--Irrelevant
Numeric Keypad
Keys
Device <--Vague
Total Key
Release <--Irrelevant
Drawer
Numeric Buttons <--Redundant
Subtotal Key
Tax Key
Screen <--Redundant
Number <--Attribute
Total <--Attribute
Tax <--Attribute
0-9 Keys
Value <--Attribute
Money
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