Apple iPod/iPhone Implementations

Calculator HP-11C. Company RLM Tools. Comments The program displays the back label of the HP-11C and supports loading/storing of programs. Works in landscape as well as portrait mode! Performance Index 2,3 on a first generation iPod - it seems the makes of the program even tried to emulate the original speed! The real HP-11C had a performance index of 1,5. Forensic Result exactly 9 - original unit 9.000417403 Acquired 10/2009

HP-11C HP-15C HP-16C HP-12C

Calculator ClassicRPN collection of HP calculators (V3.0.2) Includes the engineering HP-11C, the scientific HP-15C, the computing HP-16C and financial HP-12C. Company AmeloConsulting 2009 Comments Note that the screenshots were directly taken on my iTouch itself. See here for details. Performance Index HP-11C: 144 on a first generation iPod. This is about 100 times faster than the original unit. HP-15C/V3.2.2: 485 on an iPhone4. Forensic Results 9.000417403 for HP-11C and HP15C. This is the same result as in the original units! Acquired 5/2010

	Calculator HP-41CX. Company AL Software. Comments Supports printing, keyboard overlays, memory modules, detailled register dump, loading & saving data etc. Performance Index With settings at "Default Speed" the performance index is 4,3 (8 sec) which is a bit higher than the original HP-41. At maximum speed the index is 12,6 (2,7 sec) which is still nowhere near the HP-42S emulator (see below). Forensic Result 9.000417403. This is the same result as in the original unit! Acquired 10/2009
	Calculator HP-42S. By Byron Foster Comments Based on Fee42 Version 1.4.52. Supports printer output. Performance Index 17000 on an iPod - this clears shows the speed of the ARM CPU! The raw program byte code can be uploaded to the iPod thru a Web browser if the iPod can be accessed by Wifi. 53100 in 2/2012, V3.1.4 based on Free42 V1.4.70i on an iPhone4. Forensic Result exactly 9. Original unit 8.99999864267 Acquired 10/2009
	Calculator i48, a HP-48GX clone By Daniel Parnell Comments See Berlios. Performance Index Forensic Result 8.99999864267. This is the same result as in the original unit! Acquired Early 2010

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Calculator V3.0 of the iPod's built-in calculator. Comments Less similar to the Braun calculator (see below). Works in portrait mode as a simple calculator and in landscape mode as a scientific calculator. The mantissa apparently offers 16 digits of resolution. Note that the exponent is entered per "EE" key in a very weird mode. For manual entry the maximum exponent is 1e99 but during calculations it can reach up to 1e164 (try "1e80 x²"). There are many weird behaviours of this calculator implementation: Ie. the reciprocal of numbers equal to or larger than 1e50 yields 0! I'm not sure this calculator can be trusted... Note: This behaviour is still present in OS V4.3.2. Forensic Result 9.000000000238032

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Calculator The first versions of the iPod calculator had a striking similarity to the Braun ET66 calculator. Later versions used a different implementation (see above), maybe because of licensing issues with Braun... See also Dieter Rams on Wikipedia. Picture courtesy of www.oyayubizoku.com.

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