HP 15C Collector's Edition Review
16:29
HP 42S Scientific Calculator from 1988
25:15
HHC 2023: Recreating the HP 15c Handbooks (Eric Rechlin)
58:18
HP 12C Platinum Financial Calculator REVIEW
31:20
Every Maker Should Have [Pt.40]...an HP-15C, HP-35S or a Casio fx-61F
23:44
Excitedly unboxing my new HP 15c Collector's Edition calculator and checking the keyboard
15:01
SwissMicros DM41X Review
21:38
HP Calculators Classic Series - My Journey
21:27