| GMD | Text |
| Classification | 001.64 J472 |
| Publisher | London, Macmillan Children's Books, c1983 |
| Subject | Computers -- Juvenile literature.Electronic data processing -- Juvenile literature. |
| Description | 33 p. : ill. ; 28 cm. |
| ISBN | 9780333325124 |
| Additional ISBN | 0333325125 |