Ocean MC-100 micro cassette recorder Designer (Person) Unknown Manufacturer Ocean Date 1980 - 1989 (circa)
Rockwell 24HF calculator Designer (Person) Unknown Manufacturer Rockwell International Manufactured for House of Fraser Date 1970 - 1979 (circa)
Harvard Menloy 174 calculator Designer (Person) Unknown Manufacturer Harvard International Date 2000 (circa)
Petrous PRMC-1 calculator Designer (Person) Unknown Manufacturer Petrous Electronic Corp Date 1970 - 1999 (circa)
Texas Ti card TI-1784 calculator Designer (Person) Unknown Manufacturer Texas Instruments Date 1980 - 1989 (circa)