Upload:to transfer (software, data, character sets, etc.) from a smaller to a larger computer.
Download:to transfer (software, data, character sets, etc.) from a distant to a nearby computer, from a larger to a smaller computer, or from a computer to a peripheral device.
Literacy:

1.	the quality or state of being literate, esp. the ability to read and write.

2.	possession of education: to question someone's literacy.

3.	a person's knowledge of a particular subject or field: to acquire computer literacy.

Technical Literacy: I think it means being able to work with computers and other technical objects.