The diagram below shows the floor plan of a public library 20 years ago and how it looks now.

The provided picture presents the floor plan of the central library two decades ago and its current look.

Overall

, there are some consistent placements in both of the library's layouts. They are separated into four rooms that stand at four corners and the rest of the space is designed as a hall to store reading material,

Furthermore

, the entrance is always located at the bottom of the floor plan.

To begin

with, 20 years ago, four rooms located at the upper-right, upper-left, lower-right and lower-left respectively were planned to hold video games, children's games, reading equipment and the enquiry desk. It is worth mentioning that the enquiry desk was open to help visitors in answering questions. Meanwhile, there were tables and chairs placed in the middle of the hall.

In contrast

, with the same order, rooms now are utilized to store children's fiction books, lectures, and play computers. The lower-right room is now a cafe.

Additionally

, all reference books, adult fiction books, and self-service machines are placed on both sides of the hall for readers to browse.

In addition

, visitors can hang out in the hallway because tables and chairs are removed nowadays.