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164 × 102 × 70 mm. Sharp EL-8 of December 1970. The Sharp EL-8, also known as the ELSI-8,[1]was one of the earliest mass-produced hand-held electronic calculators[1]and the first hand-held calculator to be made by Sharp. Introduced around the start of 1971,[note 1]it was based on Sharp's preceding QT-8Dand QT-8Bcompact desktop calculators and ...
Calculator input methods. There are various ways in which calculators interpret keystrokes. These can be categorized into two main types: On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. [1] [2] [3]
A suanpan (top) and a soroban (bottom). The two abaci seen here are of standard size and have thirteen rods each. Another variant of soroban. The soroban is composed of an odd number of columns or rods, each having beads: one separate bead having a value of five, called go-dama (五玉, ごだま, "five-bead") and four beads each having a value of one, called ichi-dama (一玉, いちだま ...
A modern scientific calculator with an LCD. An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics . The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the ...
All the models above support Direct Algebraic Logic (D.A.L.), which is an infix input system used by Sharp similar to Casio's V.P.A.M. EL-501W does not support D.A.L., and only has the 7-segment digit line in EL-509W. It only supports 8-digit mantissa display in scientific notation mode. Functions are further stripped down from EL-500W.
The Sharp QT-8D Micro Compet, a small electronic desktop calculator, was the first mass-produced calculator to have its logic circuitry entirely implemented with LSI ( large-scale integration) integrated circuits (ICs) based on MOS ( metal-oxide-semiconductor) technology. [1] [note 1] When it was introduced in late 1969, [3] it was one of the ...
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