Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. data processing equipment
8. computer equipment
9. computers
10. [computers by size]
11. microcomputers

Anotations

Scope note:

Handheld computers first developed in the late 1980s and early 1990s, that had a miniature keyboard and handwriting-recognition software. Originally meant to perform simple tasks such as calculation and organizing, they have since become more advanced. Most PDAs now have the ability to act as a mobile phone, surf the Internet, and run more advanced software.