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HP 48: Difference between revisions
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The HP 48SX was the first model of the series, released in 1990. It expands on the features of the HP 28S, expanding upon the RPL system. It adds several new object types, a new powerful unit conversion system, a graphical equation editor (the first of its kind on a calculator) and matrix editor, more graphing options, serial and IR communications, and a clock and alarm system. The model number comes from a combination of the HP 41 and the HP 28, as it bridges the best features of both systems. | The HP 48SX was the first model of the series, released in 1990. It expands on the features of the HP 28S, expanding upon the RPL system. It adds several new object types, a new powerful unit conversion system, a graphical equation editor (the first of its kind on a calculator) and matrix editor, more graphing options, serial and IR communications, and a clock and alarm system. The model number comes from a combination of the HP 41 and the HP 28, as it bridges the best features of both systems. | ||
It used a 2 MHz Saturn processor known as Clarke, and was shipped with 256 KB of ROM and 32 KB of RAM. The "X" which stood for "expandable" refers to the two memory slots behind the IR cover which allowed additional ROM or RAM cards to be inserted. This early model only supports up to 128KB per card of additional RAM (cards of larger capacity were made later), which can be merged with internal memory or used as backup for calculator data. | |||
== HP 48S == | == HP 48S == | ||