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Reviews (1)
18 Aug, 2016
A Classic In Its Time - Still Powerful Today
2 of 2 found this helpful When Hewlett-Packard introduced the HP-71B in 1984, it was a major departure from the company's previous RPN (Reverse Polish Notation) keystroke-programmable calculators. With a full QWERTY keyboard and alphanumeric display, the 71B was programmed in BASIC, and incorporated an exceptionally powerful algebraic calculator. An enormous amount of effort also went into the 71's ground-breaking implementation of IEEE 754 floating point arithmetic.
Using HP-IL to connect to external drives, printers and other peripherals, the 71 was ideal for small and portable data acquisition setups. Even without HP-IL, the 71 was a versatile tool for technical professionals who didn't want to lug around one of that era's "portable" computers, with a long battery life and the ability to save and reload program and data files via the optional card reader.
Even today, the 71 stacks up well against contemporary graphing calculators; its BASIC language is easy to use, the optional Math ROM gives it support for hyperbolics, complex numbers, matrices, root finding, numerical integration and fast Fourier transforms, and a community of enthusiasts continues to produce memory upgrades and PC connection devices. I still use my two on an almost-daily basis, despite having many other calculators in my desk drawer, and it's my go-to machine for quick solutions to tricky problems.