I assume you are referring to the South African Copyright Act of 1978 since it is the only significant revision of copyright law from that year I could find.
In terms of software and privacy, there is no mention of computers or software (not unexpected since computers were not in widespread use outside of governmental agencies at the time).
The Copyright Act, No. 98 of 1978.
1978.
In the US, the current copyright act is from 1976, and went into effect in 1978. There were significant changes from previous acts.
Not since 1978.
Not on works created since 1978.
Diff'rent Strokes - 1978 Willis' Privacy 1-16 is rated/received certificates of: Australia:G
Not since 1978.
Diff'rent Strokes - 1978 Willis' Privacy 1-16 was released on: USA: 23 February 1979
IRIS Software was created in 1978.
Raxco Software was created in 1978.
JDA Software was created in 1978.
Muse Software was created in 1978.