Memory Modules for HP-75C

[toml_12953]

(03-18-2024 07:29 PM)Sylvain Cote Wrote:  

(03-18-2024 05:08 PM)toml_12953 Wrote:  Did HP ever sell a memory module for the HP-75C of more than 8K? If so what was the part number? If not, were there third-party module makers? I'd like to maximize the RAM on my 75C.

Unfortunately the maximum RAM the HP-75C/D can have is 24KB.

Reference: HP-75 Service Manual , HP-75 Memory Organization, pages 2-44 to 2-46

I guess I'll have to buy an HP-71B then. Thanks for the reply!