Image Calculator hp38g.jpg thumb 250px right HP 38G The HP 38G is a programmable graphing calculator by Hewlett Packard . It was introduced in 1995 with a suggested retail price of 79.95 US dollar USD . HP credits a committee of eight high school, community college, and university teachers with assisting in the design of the calculator. The HP 38G, unlike most of HP s other calculators, uses infix notation rather than Reverse Polish notation . Given the calculator s intended userbase of high school maths and science teachers and students, this is not surprising. The calculator is programmable, supporting small, interactive applications called aplets sic . See also List of Hewlett Packard products Pocket calculators List of HP calculators The production of the hp38g has been discontinued since approx 2004 . Its replacement was the HP 39g series HP 39G for which a pirate Computer algebra system CAS aplet came into circulation , hence there is also an HP 39g series HP 39g HP 39G which has no known CAS aplet implementable. Also, for European and some other authorities an HP 39g series HP 40G HP 40G has been available, with an on board CAS facility. Since 2006, the HP 40G is replaced by the HP 39g series HP 40gs HP 40GS , built on the ARM architecture , and offering both USB and RS232 connectivity. External links http www.hp.com hpinfo abouthp histnfacts museum personalsystems 0026 index.html HP Virtual Museum Hewlett Packard student graphic calculator http www.hpcalc.org hpcalc.org http mycalcdb.free.fr main.php?l 0&id 858 HP 38G pictures on http mycalcdb.free.fr MyCalcDB database about 70 s and 80 s pocket calculators HP Calculators Category Graphing calculators Category HP calculators 38G pl HP 38G ... more details
after a fire, while spruce relies on longer lifespan and larger basal area to survive. ref Aplet ... by fir and later on the dominance shifts to spruce. ref Aplet, Gregory H. Developmental Dynamics ... forests by preventing fir from overtaking spruce through competitive exclusion . ref Aplet, Gregory ..., thus creating holes in the canopy, spruce would be outcompeted by fir. ref Aplet, Gregory H. Developmental ... more details
HP 39g series calculators are the successors of HP 38G . There are five calculators in the 39 series of HP graphing calculators. These calculators have algebraic entry modes, and can perform numeric analysis together with varying degrees of symbolic calculation. All calculators in this series are aimed at high school level students and are characterised by their ability to download via cable or infra red applets APLET s or E lessons. These are programs of varying complexity which are generally intended to be used in the classroom to enhance the learning of mathematics by the graphical and or numerical exploration of concepts. Some hundreds of these can be found on various websites. HP 39G HP 39g was released in 2000. Basic characteristics Central Processing Unit CPU 4 megahertz MHz Saturn microprocessor SATURN Yorke Communication Proprietary infrared , Serial RS 232 Serial port . Memory 256 kilobyte KB Screen resolution 131 64 pixel s Includes a hard cover Limited symbolic equation functionality. HP 40G HP 40g was released in 2000 in parallel with the HP 39g. The HP 40G s operating system is identical to the HP 39G. Differences detected in hardware during start up trigger the differences in software functionality. Basic characteristics Identical to HP 39G except Communication No infrared communication, Serial RS 232 Serial port . Software Includes an equation writer and advanced Computer algebra system CAS . HP 39g image HP39g .jpg thumb 150px HP 39g HP 39g was released in September, 2003. Basic characteristics Central Processing Unit CPU 75 megahertz MHz ARM architecture ARM9 Communication Universal Serial Bus USB port using the Kermit protocol Kermit or XModem protocols , IrDA infrared . Memory 256 KB Power 3 AAA as main power, CR2032 for memory backup Screen resolution 131 64 pixel s Does not come with a hard cover Limited symbolic equation functionality. Note Although an ARM processor is used in this model, the operating system is substantially th ... more details
. ref name Aplet cite journal last Aplet first Gregory H. title Evolution of Wilderness Fire Policy ... as a natural part of ecosystems. ref name Aplet By 1968, the National Park Service had adjusted its ... more details
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