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The HP-18C is a Hewlett-Packard business calculator which was quickly followed by the very similar but greatly improved HP-19B. The HP-18C is HP's first RPL -based calculator internally, [1] even though this was not visible on user-level in this non user-programmable model. The user has a solver (another HP first) available, but only had about ...
HP-19C calculator HP-29C with AC-powered battery charger. The HP-19C and HP-29C were scientific/engineering pocket calculators made by Hewlett-Packard between 1977 and 1979. They were the most advanced and last models of the "20" family (compare HP-25) and included Continuous Memory (battery-backed CMOS memory) as a standard feature.
OmniBook is a line of laptops originally made by Hewlett-Packard and currently sold by HP Inc., the 2015 successor to the original Hewlett-Packard. The original OmniBook line was introduced in 1993 as a line of business-oriented laptops and subnotebooks. It was discontinued in 2002 following the acquisition of Compaq by Hewlett-Packard, with ...
Peukert's law. Peukert's law, presented by the German scientist Wilhelm Peukert [de] in 1897, expresses approximately the change in capacity of rechargeable lead–acid batteries at different rates of discharge. As the rate of discharge increases, the battery's available capacity decreases, approximately according to Peukert's law.
HP OmniGo 700LX. The HP OmniGo 700LX Communicator Plus (F1206A), codenamed Columbia, was a project of the HP calculator branch in Singapore. The HP OmniGo 700LX is a 2 MB HP 200LX redesigned to piggyback a Nokia 2110 GSM mobile telephone for wireless mobility. The HP 200LX motherboard was factory-modified to support a second PCMCIA slot for a ...
They use a small rapidly pulsing omnidirectional radar, usually with a powerful battery that has a long storage life, and a very short operational life. The fuzes used in anti-aircraft artillery have to be mechanically designed to accept fifty thousand g , yet still be cheap enough to throw away.
A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li + ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries, Li-ion batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life.
State of charge. State of charge (SoC) quantifies the remaining capacity available in a battery at a given time and in relation to a given state of ageing. [1] It is usually expressed as percentage (0% = empty; 100% = full). An alternative form of the same measure is the depth of discharge (DoD), calculated as 1 − SoC (100% = empty; 0% = full ...