manual calculator
61Curta — Saltar a navegación, búsqueda La calculadora mecánica Curta en exhibición en el Museo de Historia del Computador, en Mountain View, California …
62Emacs — infobox software caption = GNU Emacs 22.0.91.1 with multiple buffers and syntax highlighting for LaTeX, C#, and C. developer = the GNU project author = Richard Stallman released = release year|1976 frequently updated = yes programming language =… …
63Computer science — or computing science (abbreviated CS) is the study of the theoretical foundations of information and computation and of practical techniques for their implementation and application in computer systems. Computer scientists invent algorithmic… …
64Handloading — or reloading is the process of loading firearm cartridges or shotgun shells by assembling the individual components (case/shotshell, primer, powder, and bullet/shot), rather than purchasing completely assembled, factory loaded cartridges.… …
65Chi-square distribution — Probability distribution name =chi square type =density pdf cdf parameters =k > 0, degrees of freedom support =x in [0; +infty), pdf =frac{(1/2)^{k/2{Gamma(k/2)} x^{k/2 1} e^{ x/2}, cdf =frac{gamma(k/2,x/2)}{Gamma(k/2)}, mean =k, median… …
66Control-Alt-Delete — This article is about the keyboard combination. For a list of keyboard shortcuts, see Table of keyboard shortcuts. For other uses, see Control Alt Delete (disambiguation). The keys Control Alt Delete highlighted on a QWERTY keyboard. Control Alt… …
67Check digit — A check digit is a form of redundancy check used for error detection, the decimal equivalent of a binary checksum. It consists of a single digit computed from the other digits in the message. With a check digit, one can detect simple errors in… …
68Psychrometrics — or psychrometry are terms used to describe the field of engineering concerned with the determination of physical and thermodynamic properties of gas vapor mixtures. The term derives from the Greek psuchron (ψυχρόν) (… …
69HP 200LX — The HP 200LX (also known as Project Felix) is a personal digital assistant introduced by Hewlett Packard in 1994. It was often called a palmtop computer, and it was notable that it was, with some minor exceptions, a 100% MS DOS compatible… …
70Elementary arithmetic — is the most basic kind of mathematics: it concerns the operations of addition, subtraction, multiplication, and division. Most people learn elementary arithmetic in elementary school.Elementary arithmetic starts with the natural numbers and the… …
