A-Aluminum

W-Wood

P-Dining Room

CH-Ceiling

CB -Foyer

W.C-Bathroom

K.C-Kitchen

C.W-Washing machine

REF-Refrigerator

EIV -Staircase

TP-Telephone

TV-Television

PC-Computer

A/C-Air Conditioner

1F -first floor

2F-second floor

3F-third floor

...

RF-top floor.

Computer Aided Design (CAD-Computer Aided Design) refers to the use of computers and their graphics equipment to help designers in their design work. In the design usually use the computer to carry out a lot of calculations, analysis and comparison of different schemes to decide the optimal scheme; all kinds of design information, whether numerical, textual or graphical, can be stored in the computer's memory or external memory and can be retrieved quickly; designers usually start the design with sketches, and the heavy work of turning the sketches into working drawings can be handed over to computers to complete; automatically generated by computer design results, can quickly make graphics, so that designers make timely judgments and modifications to the design; use of computers can be edited with graphics, zoom in, zoom out, pan, copy and rotate and other related graphic data processing work.