The HP16C programmable calculator is designed for computer scientists, and in addition to normal floating point operations allows easy conversion between hexadecimal, decimal, octal, and binary, as well as logical operations and bit manipulations HP16C Programming Calculator with case and manual very clean, works great!The most advanced is the WP 34S, a programmable scientific calculator that combines the functionality of the HP42S and HP16C and includes many other novel features and functions HP b Wikipedia ), subsequent HP models so featured simply had designations in which the letter "C" followed the model number, eg the HP34C and theVoyager series calculators, which include the HP10C, HP11C, HP12C, HP15C, and HP16C have two separate test functions, the internal/display selftest, and a keyboard test To perform the internal/display selftest, with the calculator off, press and hold the multiply key, press and release the ON key, then release the multiply key The Manual For ...