My grandpa's 1965(ish) HP 21 Calculator : r/BuyItForLife

Drake finally got his old high school rhyme book back. So I'm uploading the available pages. Also has some rare photos. : r/Drizzy

The Last time Dow Jones Industrial Average had 13 green days in a row was the year 1987. ( Other years: 1970, 1929 🤣 ) : r/wallstreetbets

My HP calculators : r/calculators

My grandpa's 1965(ish) HP 21 Calculator : r/BuyItForLife

My grandpa gave me this old calculator (HP-12C). I do not know anything about it or if it is anything special but I saw the hp logo. Can anybody tell me about

My Dad's HP 35 Calculator. The First Pocket Scientific Calculator, Still Going Strong. : r/BuyItForLife

HP Vintage Calculators for sale

Bill Gates showing the capacity of a single CD, 1980s : r/OldSchoolCool

Best Calculator I've Ever Owned : r/BuyItForLife

Never_Woke (u/Never_Woke) - Reddit