Be Careful of the Differences Between INPUT and INPUT DEVICE OUTPUT and OUTPUT DEVICE!!

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Be Careful of the Differences Between INPUT and INPUT DEVICE OUTPUT and OUTPUT DEVICE!!

Chapter 1: Preliminary Concept 基本概念 http://www.i-garden.org FORM 4 COMPUTER STUDIES / PASCAL PROGRAMMING Chapter 1: Preliminary Concept 基本概念 March, 01 1.1. INPUT Ö PROCESS Ö OUTPUT • like many types of machines, computer operates according to the following sequence: • examples of I-P-O: INSTANCES INPUT STAGE PROCESS STAGE OUTPUT TAGE 例子輸入階段處理階段輸出階段 INPUT INPUT PROCESS PROCESSING OUTPUT OUTPUT DEVICE DEVICE DEVICE 輸入輸入設備處理處理設備輸出輸出設備 1. Photocopying A sheet of Paper tray, A light sensor light sensor, duplicate paper outlet document, a glass surface senses the carbon copies of the sheet of blank original sheet of drum original sheet paper document and puts carbon dots onto a piece of paper 2. Using a toaster Pieces of bread Toaster Converts Heat coils in Toasts Toaster electrical energy the toaster into heat, which radiates to the pieces of bread 3. Withdrawing ETC card card inlet the central ETC bills and cash and cash from ETC system verifies machine, receipt receipt machine password, central outlet adjusts the system balance Be careful of the differences between INPUT and INPUT DEVICE OUTPUT and OUTPUT DEVICE!! cs01_97.doc 1 of 1 Chapter 1: Preliminary Concept 基本概念 http://www.i-garden.org 1.2. STORED PROGRAMS Most automatic devices could “remember” and perform a defined set of instructions repetitively and automatically. This set of instructions is called a program. 1.2.1. Daily Examples of Stored Program Devices (a) Keymatic washing machine（洗衣機） (b) Music Box （音樂盒） (c) Video Cassette Recorder (d) ___________________________ 1.2.2. History of Stored Program Devices (a) Jacquard's weaving loom (1801) • during the industrial revolution, Joseph Marie Jacquard (1752-1834) invented an automatic weaving machine that resulted in automatic pattern weaving (b) Babbage's Two Machines • Difference Engine (1822-1834) was designed to compute the roots of polynomial; • Analytical Engine (1834-1871) was very similar in concept to the modern computer: Charles Babbage is known as "the Father of Modern Computer" (c) Development of data storage - Hollerith's Tabulator (1890) • By the end of the 19th century, Herman Hollerith (1860-1929) invented a punched card device to handle the very large amount of census （人口統計） data. end of chapter 1 cs01_97.doc 2 of 2 .

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Joseph-Marie Jacquard
Joseph-Marie Jacquard Born July 7, 1752, Lyons, France, died August 7, 1834, Ouillins, France; in the late eighteenth century Jacquard developed a practical automatic loom which wove patterns controlled by a linked sequence of punched cards; Jacquard looms are still in use today throughout the world. Jacquard's father was a silk weaver and his mother a pattern maker, but he pursued careers as a plasterer, cutler, type founder, and soldier, before he found an interest in his father's loom and began weaving fabric experimentally. His early career was during the period of the French Revolution and so he did not begin seriously to weave until the early years of Napoleon's reign. In 1803 Jacquard traveled to England to construct a loom to fabricate fish nets for the London Society of Arts. In February 1804 he completed the loom and was presented with the society's gold medal for his services, and 3000 FF for his efforts. Napoleon heard of Jacquard's achievements in England and summoned him to Paris to join the Conservatoire des Arts to work on looms for the Republic. Jacquard took the opportunity to study the automatic loom created by Jacques de Vaucanson in 1745, which, in turn, was based on the design of Falcon (1728), and used punched tape.1 Jacquard improved on Vaucanson's design by using punched cards to control the patterns which were to be woven. The cards were interconnected into a “program” and, as the weaving progressed, the cards passed over a perforated four-sided drum against which a set of needles, connected by wires to the warp threads, moved.
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