Another step toward the replacement of slide rules with electronics was the development of electronic calculators for scientific and engineering use. The first included the Wang Laboratories LOCI-2, introduced in 1965, which used logarithms for multiplication and division and the Hewlett-Packard HP-9100, introduced in 1968. The HP-9100 had trigonometric functions (sin, cos, tan) in addition to exponentials and logarithms. It used the CORDIC (coordinate rotation digital computer) algorithm, which allows for calculation of trigonometric functions using only shift and add operations. This method helped the development of ever smaller scientific calculators.
ʌ n ʌ ð ə ɹ WORD_BOUNDARY s t ɛ p WORD_BOUNDARY t ə w ɔ ɹ d WORD_BOUNDARY ð ə WORD_BOUNDARY ɹ ɪ p l eɪ s m ə n t WORD_BOUNDARY ʌ v WORD_BOUNDARY s l aɪ d WORD_BOUNDARY ɹ uː l z WORD_BOUNDARY w ɪ ð WORD_BOUNDARY ɪ l ɛ k t ɹ ɑ n ɪ k s WORD_BOUNDARY w ʌ z ð ə WORD_BOUNDARY d ɪ v ɛ l ə p m ə n t WORD_BOUNDARY ʌ v WORD_BOUNDARY ɪ l ɛ k t ɹ ɑ n ɪ k WORD_BOUNDARY k æ l k j ʊ l eɪ t ə ɹ z WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY s aɪ ə n t ɪ f ɪ k WORD_BOUNDARY æ n d WORD_BOUNDARY ɛ n d̠ʒ ɪ n ɪ ɹ ɪ ŋ WORD_BOUNDARY j uː s WORD_BOUNDARY ð ə WORD_BOUNDARY f ɜː s t WORD_BOUNDARY ɪ ŋ k l uː d ɪ d WORD_BOUNDARY ð ə WORD_BOUNDARY w æ ŋ ɡ WORD_BOUNDARY l æ b ɹ ə t ɔ ɹ i z WORD_BOUNDARY l oʊ s aɪ WORD_BOUNDARY t uː WORD_BOUNDARY ɪ n t ɹ ə d uː s t WORD_BOUNDARY ɪ n WORD_BOUNDARY n aɪ n t iː n h ʌ n d ɹ ɪ d WORD_BOUNDARY s ɪ k s t i WORD_BOUNDARY f aɪ v WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY j uː z d WORD_BOUNDARY l ɑ ɡ ə ɹ ɹ ɪ θ ə m z WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY m ʌ l t ɪ p l ɪ k eɪ ʃ ə n WORD_BOUNDARY æ n d WORD_BOUNDARY d ɪ v ɪ ʒ ə n WORD_BOUNDARY æ n d WORD_BOUNDARY ð ə WORD_BOUNDARY h j uː l ɪ t p æ k ə ɹ d WORD_BOUNDARY eɪ t̠ʃ p iː WORD_BOUNDARY n aɪ n WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY w ʌ n h ʌ n d ɹ ɪ d WORD_BOUNDARY ɪ n t ɹ ə d uː s t WORD_BOUNDARY ɪ n WORD_BOUNDARY n aɪ n t iː n h ʌ n d ɹ ɪ d WORD_BOUNDARY s ɪ k s t i WORD_BOUNDARY eɪ t WORD_BOUNDARY ð ɪ WORD_BOUNDARY eɪ t̠ʃ p iː WORD_BOUNDARY n aɪ n WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY w ʌ n h ʌ n d ɹ ɪ d WORD_BOUNDARY h æ d WORD_BOUNDARY t ɹ ɪ ɡ ə n oʊ m ɛ t ɹ ɪ k WORD_BOUNDARY f ʌ ŋ k ʃ ə n z WORD_BOUNDARY s ɪ n WORD_BOUNDARY k ɑ s WORD_BOUNDARY t æ n WORD_BOUNDARY ɪ n WORD_BOUNDARY ʌ d ɪ ʃ ə n WORD_BOUNDARY t ʊ WORD_BOUNDARY ɛ k s p ə n ɛ n ʃ ə l z WORD_BOUNDARY æ n d WORD_BOUNDARY l ɑ ɡ ə ɹ ɹ ɪ θ ə m z WORD_BOUNDARY ɪ t WORD_BOUNDARY j uː z d WORD_BOUNDARY ð ə WORD_BOUNDARY k ɔ ɹ d ɪ k WORD_BOUNDARY k oʊ ɔ ɹ d ɪ n ə t WORD_BOUNDARY ɹ oʊ t eɪ ʃ ə n WORD_BOUNDARY d ɪ d̠ʒ ɪ t ə l WORD_BOUNDARY k ə m p j uː t ə ɹ WORD_BOUNDARY æ l ɡ ə ɹ ɹ ɪ θ ə m WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY ʌ l aʊ z WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY k æ l k j ʊ l eɪ ʃ ə n WORD_BOUNDARY ʌ v WORD_BOUNDARY t ɹ ɪ ɡ ə n oʊ m ɛ t ɹ ɪ k WORD_BOUNDARY f ʌ ŋ k ʃ ə n z WORD_BOUNDARY j uː z ɪ ŋ WORD_BOUNDARY oʊ n l i WORD_BOUNDARY ʃ ɪ f t WORD_BOUNDARY æ n d WORD_BOUNDARY æ d WORD_BOUNDARY ɑ p ə ɹ ɹ eɪ ʃ ə n z WORD_BOUNDARY ð ɪ s WORD_BOUNDARY m ɛ θ ə d WORD_BOUNDARY h ɛ l p t WORD_BOUNDARY ð ə WORD_BOUNDARY d ɪ v ɛ l ə p m ə n t WORD_BOUNDARY ʌ v WORD_BOUNDARY ɛ v ə ɹ WORD_BOUNDARY s m ɔ l ə ɹ WORD_BOUNDARY s aɪ ə n t ɪ f ɪ k WORD_BOUNDARY k æ l k j ʊ l eɪ t ə ɹ z WORD_BOUNDARY