The Five Generations of Computing The history of computer development is often referred to in terms of five distinct eras‚ or "generations" of computing devices. Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate‚ resulting in increasingly smaller‚ cheaper‚ more powerful and more efficient and reliable devices. The First Generation: 1946 to 1955 The first computers used vacuum tubes for circuitry‚ magnetic drums
Premium Integrated circuit Computer Vacuum tube
Polymethylmethacrylate‚ or PMMA for short‚ is a polymer consisting of the monomer methyl methacrylate that has been around since the 1930s1. PMMA is a polymer that has a high impact strength‚ is scratch and shatter resistant‚ and is relatively lightweight1. Because PMMA can also be formed into a transparent thermoplastic and has a glass transitions temperature of 130oC‚ this polymer served as a glass substitute in its early uses1. Other beneficial characteristics of Polymethylmethacrylate include
Premium Orthopedic surgery Osseous tissue Collagen
Imagine a time when being cool meant long hair‚ a slick car‚ and tickets to the weekend double feature at the drive-in. The 1960s made this dream the goal of teenage boys; near the end of the 2010s‚ if a person has similar things‚ they can still be considered cool‚ hip‚ and with the times‚ excluding the drive-in. Drive-ins are nearly extinct‚ so maybe just a normal movie. With its share of similarities‚ the 1960s did have profound differences in many categories. Some of these categories include
Premium Television Mobile phone Computer
Ghosts of Mississippi The Ghosts of Mississippi is a movie about the assassination of civil rights activist Medgar Evers in 1963. On June 11‚ 1963 President John F‚ Kennedy was giving a speech on civil rights. Medgar Evers wife Myrlie and there 3 children watched the speech in their home waiting for‚ Medgar Evers to return home. Shortly after midnight Medgar Evers pulled into his driveway of his Jackson MS home as he was getting out of his car he was shot in the back by forty-two year old Bryon
Premium Ku Klux Klan
Katherine Nansfield “The Doll’s House” is short story that observes the class structure of the 1920s in New Zealand. Though the Burnells use the arrival of their doll’s house to show off to their friends and exclude the Kelveys‚ Kezia is able to see beyond the constrictive social structure and invites the Kelveys in regardless of their social background. An idea‚ presented in this story‚ that is relevant to people in today’s society is the innocence and imagination of youth contrasted with the cynicism
Premium Sociology
Inside the Super-Fast‚ 100-Year Deal for the Waldorf By William D. Cohan October 08‚ 2014 The $1.95 billion sale of New York’s Waldorf Astoria hotel‚ announced on Oct. 6‚ is mostly framed as the 2014 analogue to Japan’s Mitsubishi Estate Co. buying Rockefeller Center—the moment that removes any doubt that China‚ and Chinese investors‚ are for real. Only a month ago‚ real estate investment bankers at Eastdil Secured were putting together a selling memorandum about the Waldorf for Hilton and Blackstone’s
Premium Insurance
Weekly Case : Trader Joe’s - What are the key sources of Trader Joe’s competitive advantage? Is their advantage sustainable? Unlike another retail stores‚ Trader Joe’s aims to provide an extraordinary shopping experience unable to be found anywhere else in the perspectives of the following key sources. Store operations: The Stores are small in old strip malls in suburban locations. There are no self-out checkout lanes so the customers had opportunity to talk to employees. Merchandising: It
Premium Grocery store Retailing Good
Megan Spillane Dr. Wearne Literature February 17‚ 2015 Soldier’s Home A “Soldier’s Home”‚ written by Ernest Hemingway‚ relates to a man named Krebs‚ a previous soldier coming home and experiencing the repercussions of fighting in World War I. Hemingway depicts Krebs as feeling lonesome‚ out of place‚ and directionless throughout the story‚ and wanting to stay out of the emotional complications of society. During his time home from war‚ Krebs lives with his family who is blankly aware
Premium Emotion World War II English-language films
A DOLL’S HOUSE As Modern Tragedy BY Henrick Ibsen _ Henrick Ibsen Father of Modern Drama _This play was written in 1879 in Italy. _The original language is Norwegian. _The setting is around the 1870s. _The themes are the sacrificial role of women‚ the unreliability of appearances‚ and parental and family obligations. _The symbols are New Year’s and Aristotle: According to Aristotle‚ a tragedy always centers around a high-ranking person‚ such as a noble or king. During the course of the play
Free A Doll's House Henrik Ibsen Drama
A Study in the Nuances of Communications Antiques Roadshow Antiques Roadshow is a display of the non-verbal and verbal cues present in professional communication. Non-verbal cues include use of gestures and eye contact whilst a verbal cue includes the use of language. Certain elements overlap in both categories. These include the specific manner in which the expert relates to the owner‚ shift of power‚ manner in which the item is held and discussed and levels of courtesy expressed. Specific
Premium Nonverbal communication Communication Proxemics