IBMPC
| Date | Clue |
|---|---|
| 2020-11-21 | 28-pound debut of 1981 |
| 2018-11-15 | Cloned machine of old |
| 2014-11-15 | Home tech product discontinued in 1987 |
| 2014-05-04 | Landmark tech product of 1981 |
| 2014-03-04 | Tech product introduced in '81 |
| 2010-11-02 | Machine that was often cloned |
| 2010-01-11 | 1980s hardware that used Microsoft Basic |
| 2007-11-11 | Item often cloned |