HP-65 trivia

[Tugdual]

Quote:As an additional feature, the "octal to decimal" conversion will accept non-octal arguments containing the digits 8 or 9. A non-octal number such as 998 will be interpreted as (9x82) + (9x8) + 8 = 656.

I would have expected 1220.

Seriously, this is a bit misleading, probably the reason why later on the 35s the use of a suffix like 'h' or 'o' was made mandatory to the detriment of a certain ease of use. I remember the prime was also quite painful. I wish I had had a 16c.