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The HP-15C is the only calculator that ever became an extension of my mind. It is that good. After 20 years the keys became a little unreliable, so the brain co
by PigBoyOhBoy 15y ago
The HP-15C is the only calculator that ever became an extension of my mind. It is that good. After 20 years the keys became a little unreliable, so the brain connection snapped; I don't know if I could wire it back in again.