Please help I upped the points and please don't answer if you don't have the answer..

Which of the following is not true about designing classes? In order for class information to be printed instead of a memory add

Leokris [45]

'<span>All methods should be declared private</span>' is not true for classes. One should be able to change the properties of objects, and to do this safely and in a controlled manner, some public methods are declared. Some private methods can also be declared for more potentially sensitive operations for being called from within the class.

6 0

3 years ago

Compare and contrast Charles bebbage and Blaise Pascal inventions<br>

telo118 [61]

Explanation:

A computer might be described with deceptive simplicity as “an apparatus that performs routine calculations automatically.” Such a definition would owe its deceptiveness to a naive and narrow view of calculation as a strictly mathematical process. In fact, calculation underlies many activities that are not normally thought of as mathematical. Walking across a room, for instance, requires many complex, albeit subconscious, calculations. Computers, too, have proved capable of solving a vast array of problems, from balancing a checkbook to even—in the form of guidance systems for robots—walking across a room.

Before the true power of computing could be realized, therefore, the naive view of calculation had to be overcome. The inventors who laboured to bring the computer into the world had to learn that the thing they were inventing was not just a number cruncher, not merely a calculator. For example, they had to learn that it was not necessary to invent a new computer for every new calculation and that a computer could be designed to solve numerous problems, even problems not yet imagined when the computer was built. They also had to learn how to tell such a general problem-solving computer what problem to solve. In other words, they had to invent programming.

They had to solve all the heady problems of developing such a device, of implementing the design, of actually building the thing. The history of the solving of these problems is the history of the computer. That history is covered in this section, and links are provided to entries on many of the individuals and companies mentioned. In addition, see the articles computer science and supercomputer.

Early history

Computer precursors

The abacus

The earliest known calculating device is probably the abacus. It dates back at least to 1100 BCE and is still in use today, particularly in Asia. Now, as then, it typically consists of a rectangular frame with thin parallel rods strung with beads. Long before any systematic positional notation was adopted for the writing of numbers, the abacus assigned different units, or weights, to each rod. This scheme allowed a wide range of numbers to be represented by just a few beads and, together with the invention of zero in India, may have inspired the invention of the Hindu-Arabic number system. In any case, abacus beads can be readily manipulated to perform the common arithmetical operations—addition, subtraction, multiplication, and division—that are useful for commercial transactions and in bookkeeping.

The abacus is a digital device; that is, it represents values discretely. A bead is either in one predefined position or another, representing unambiguously, say, one or zero.

Analog calculators: from Napier’s logarithms to the slide rule

Calculating devices took a different turn when John Napier, a Scottish mathematician, published his discovery of logarithms in 1614. As any person can attest, adding two 10-digit numbers is much simpler than multiplying them together, and the transformation of a multiplication problem into an addition problem is exactly what logarithms enable. This simplification is possible because of the following logarithmic property: the logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers. By 1624, tables with 14 significant digits were available for the logarithms of numbers from 1 to 20,000, and scientists quickly adopted the new labour-saving tool for tedious astronomical calculations.

Most significant for the development of computing, the transformation of multiplication into addition greatly simplified the possibility of mechanization. Analog calculating devices based on Napier’s logarithms—representing digital values with analogous physical lengths—soon appeared. In 1620 Edmund Gunter, the English mathematician who coined the terms cosine and cotangent, built a device for performing navigational calculations: the Gunter scale, or, as navigators simply called it, the gunter. About 1632 an English clergyman and mathematician named William Oughtred built the first slide rule, drawing on Napier’s ideas. That first slide rule was circular, but Oughtred also built the first rectangular one in 1633. The analog devices of Gunter and Oughtred had various advantages and disadvantages compared with digital devices such as the abacus. What is important is that the consequences of these design decisions were being tested in the real world.

Digital calculators: from the Calculating Clock to the Arithmometer

In 1623 the German astronomer and mathematician Wilhelm Schickard built the first calculator. He described it in a letter to his friend the astronomer Johannes Kepler, and in 1624 . .

5 0

3 years ago

Consumers may receive an e-mail, supposedly from their bank or credit card company, saying that their account's security has

Gnom [1K]

Answer:

Phishing

Explanation:

Phishing is a term used when a person fraudly or illegally uses a digital communication channel i.e. emails, by using the name of some reputed company or banks to get another person's personal data i.e login credentials, credit card details by telling them to log in the webpage given by them.

Phishing is one of the most happening cybercrimes which uses Email as their medium to reach the other person whose data they want to steal. Phishing is one of the terms of hacking.

6 0

3 years ago

Para que se utilizan las siguientes plataformas: Matlab, Labview, VisualBasic, Mplab, Micropic, PicCompiller

Sergeu [11.5K]

Answer:

MATLAB (abreviatura de MATrix LABoratory, «laboratorio de matrices») es un sistema de cómputo numérico que ofrece un entorno de desarrollo integrado (IDE) con un lenguaje de programación propio (lenguaje M). Está disponible para las plataformas Unix, Windows, macOS y GNU/Linux.

Entre sus prestaciones básicas se hallan la manipulación de matrices, la representación de datos y funciones, la implementación de algoritmos, la creación de interfaces de usuario (GUI) y la comunicación con programas en otros lenguajes y con otros dispositivos hardware.

LABVIEW (acrónimo de Laboratory Virtual Instrument Engineering Workbench) es una plataforma y entorno de desarrollo para diseñar sistemas, con un lenguaje de programación visual gráfico pensado para sistemas hardware y software de pruebas, control y diseño, simulado o real y embebido.

Visual Basic (VB) es un lenguaje de programación dirigido por eventos, desarrollado por Alan Cooper para Microsoft. Este lenguaje de programación es un dialecto de BASIC, con importantes agregados. Su primera versión fue presentada en 1991, con la intención de simplificar la programación utilizando un ambiente de desarrollo.

MPLAB es un editor IDE gratuito, destinado a productos de la marca Microchip. Este editor es modular, permite seleccionar los distintos microcontroladores soportados, además de permitir la grabación de estos circuitos integrados directamente al programador.

MICROPICUn PIC es un circuito integrado programable (Programmable Integrated Circuited), el cual contiene todos los componentes para poder realizar y controlar una tarea, por lo que se denomina como un microcontrolador. Los PIC son una familia de microcontroladores tipo RISC fabricados por Microchip Technology Inc. y derivados del PIC1650, originalmente desarrollado por la división de microelectrónica de General Instrument.

PICCOMPILER

El Portable C Compiler o Compilador de C Portable (también conocido como pcc o, algunas veces, como pccm - máquina de compilador de C portable) fue uno de los primeros compiladores para el lenguaje de programación C escrito por Stephen C. Johnson de los Laboratorios Bell a mediados de los 70, basado, en parte, en las ideas de un trabajo previo de Alan Snyder en 1973.

Explanation:

MATLAB (abreviatura de MATrix LABoratory, «laboratorio de matrices») es un sistema de cómputo numérico que ofrece un entorno de desarrollo integrado (IDE) con un lenguaje de programación propio (lenguaje M). Está disponible para las plataformas Unix, Windows, macOS y GNU/Linux.

Entre sus prestaciones básicas se hallan la manipulación de matrices, la representación de datos y funciones, la implementación de algoritmos, la creación de interfaces de usuario (GUI) y la comunicación con programas en otros lenguajes y con otros dispositivos hardware.

LABVIEW (acrónimo de Laboratory Virtual Instrument Engineering Workbench) es una plataforma y entorno de desarrollo para diseñar sistemas, con un lenguaje de programación visual gráfico pensado para sistemas hardware y software de pruebas, control y diseño, simulado o real y embebido.

Visual Basic (VB) es un lenguaje de programación dirigido por eventos, desarrollado por Alan Cooper para Microsoft. Este lenguaje de programación es un dialecto de BASIC, con importantes agregados. Su primera versión fue presentada en 1991, con la intención de simplificar la programación utilizando un ambiente de desarrollo.

MPLAB es un editor IDE gratuito, destinado a productos de la marca Microchip. Este editor es modular, permite seleccionar los distintos microcontroladores soportados, además de permitir la grabación de estos circuitos integrados directamente al programador.

MICROPICUn PIC es un circuito integrado programable (Programmable Integrated Circuited), el cual contiene todos los componentes para poder realizar y controlar una tarea, por lo que se denomina como un microcontrolador. Los PIC son una familia de microcontroladores tipo RISC fabricados por Microchip Technology Inc. y derivados del PIC1650, originalmente desarrollado por la división de microelectrónica de General Instrument.

PICCOMPILER

El Portable C Compiler o Compilador de C Portable (también conocido como pcc o, algunas veces, como pccm - máquina de compilador de C portable) fue uno de los primeros compiladores para el lenguaje de programación C escrito por Stephen C. Johnson de los Laboratorios Bell a mediados de los 70, basado, en parte, en las ideas de un trabajo previo de Alan Snyder en 1973.

7 0

3 years ago

When you are printing handouts, which of these can you do? A. Save paper by placing more than one slide per page. B. Check the f

Bogdan [553]

I would say D because if u double up in paper u save more and if people have a copy they are more likely to be able to follow along.

6 0

3 years ago