Tuesday, March 24, 2020

A Cry in the Night essays

A Cry in the Night essays 1. The title of my book is A Cry in the Night by Mary Higgins Clark. 2. The place settings of my book are Granite Place, Minnesota and New York City. The time setting is over a period of a year. 3. The main characters in A Cry in the Night are: Erich Krueger-Erich is a 34-year-old man that is a very good artist. Erich is a very rich man whos mother died when he was a little boy. Jenny- Jenny is one of the main characters in my book. Jenny looks just like Caroline who is Erichs mother. Jenny was married to Kevin, but is know married to Erich. Jenny has two girls named Beth and Tina. Jenny was very busy until she married Erich. Kevin-Kevin is Jennys ex-husband who was killed by Erich, but the town thought Jenny killed Kevin. Tina and Beth-Tina and Beth are Jennys daughters who are in a difficult situation. Their situation is Erich wants the girls to forget that Kevin was their father. Tina is 2-years-old and Beth is 3-years-old. Mark-Mark is Erichs best friend who helps Jenny through a very hard time. This time was when the town thought Jenny killed Kevin. Emily-Emily is Erichs friend who is the main talker in the town. If anything went wrong Emily would be sure to tell everyone in the town. Rooney-Rooney is Jennys new best friend. Erich killed Rooneys daughter, but Erich told Rooney that some day her daughter will return. Everyone in town thought Rooney should be put in a mental home except for her husband. Clyde-Clyde is Rooneys husband who comforts her whenever she needs it. Clyde is the main keeper of the Krueger Farm. Erich was very jealous of Clydes relationship with Jenny. Erich thought Clyde and Jenny were more than just friends, but they werent. Person vs. Person-is on of the main conflicts in my book. Person vs. Person is shown when Kevin and Erich got in a fight over Jenny. ...

Friday, March 6, 2020

Discover the History of the ENIAC Computer

Discover the History of the ENIAC Computer As technology progressed in the early and mid-1900s, the need for enhanced computational speed grew. In response to this deficit, the American military invested half a million dollars to create the ideal computing machine. Who Invented the ENIAC? On May 31, 1943, the military commission for the new computer began with  the partnership of John Mauchly and John Presper Eckert, with the former serving as the chief consultant and Eckert as the chief engineer. Eckert had been a graduate student at the University of Pennsylvanias Moore School of Electrical Engineering when he and Mauchly met in 1943. It took the team about one year to design the ENIAC and then 18 months plus half a million dollars in tax money to build it. The machine wasnt officially turned on until November 1945, by which time the war was over. However, not all was lost, and the military still put ENIAC to work, performing calculations for the design of a hydrogen bomb, weather predictions, cosmic-ray studies, thermal ignition, random-number studies, and wind-tunnel design. The ENIAC In 1946, Mauchly and Eckert developed the Electrical Numerical Integrator And Calculator (ENIAC). The American military sponsored this research because it needed a computer for calculating artillery-firing tables, the settings used for different weapons under varied conditions for target accuracy. As the branch of the military responsible for calculating the tables, the Ballistics Research Laboratory (BRL) became interested after hearing about Mauchlys research at the Moore School. Mauchly had previously created several calculating machines and in 1942  began designing a better calculating machine based on the work of John Atanasoff, an inventor who  used vacuum tubes to speed up calculations. The patent for ENIAC was filed in 1947. An excerpt from that patent, (U.S.#3,120,606) filed on June 26, read, With the advent of everyday use of elaborate calculations, speed has become paramount to such a high degree that there is no machine on the market today capable of satisfying the full demand of modern computational methods. What Eas Inside the ENIAC? The ENIAC was an intricate and elaborate piece of technology for the time. Housed within 40 9-foot-tall cabinets, the machine contained 17,468 vacuum tubes  along with 70,000 resistors, 10,000 capacitors, 1,500 relays, 6,000 manual switches, and 5 million soldered joints. Its dimensions covered 1,800 square feet (167 square meters) of floor space and weighed 30 tons, and running it consumed 160 kilowatts of electrical power. Two 20-horsepower blowers delivered cool air to keep the machine from overheating. The vast extent of energy being used led to a rumor that turning on the machine would cause the city of Philadelphia to experience brownouts. However, the story, which was first reported incorrectly by the Philadelphia Bulletin in 1946, has since been discounted as an urban myth. In just one second, the ENIAC (1,000 times faster than any other calculating machine to date) could perform 5,000 additions, 357 multiplications, or 38 divisions. The use of vacuum tubes instead of switches and relays resulted in the increase in speed, but it was not a quick machine to reprogram. Programming changes would take the technicians weeks, and the machine always required long hours of maintenance. As a side note, research on the ENIAC led to many improvements in the vacuum tube. Contributions of Dr. John Von Neumann In 1948, Dr. John Von Neumann made several modifications to the ENIAC. The ENIAC had performed arithmetic and transfer operations concurrently, which caused programming difficulties. Von Neumann suggested that using switches to control code selection would make it so that pluggable cable connections could remain fixed. He added a converter code to enable serial operation. Eckert-Mauchly Computer Corporation Eckert and Mauchlys work extended beyond just ENIAC. In 1946, Eckert and Mauchly started the Eckert-Mauchly Computer Corporation. In 1949, their company launched the BINAC (BINary Automatic Computer) that used magnetic tape to store data. In 1950, the Remington Rand Corporation bought the Eckert-Mauchly Computer Corporation and changed the name to the Univac Division of Remington Rand. Their research resulted in the UNIVAC (UNIVersal Automatic Computer), an essential forerunner to todays computers. In 1955, Remington Rand merged with the Sperry Corporation and formed Sperry-Rand. Eckert remained with the company as an executive and continued with the company when it later merged with the Burroughs Corporation to become Unisys. Eckert and Mauchly both received the IEEE Computer Society Pioneer Award in 1980. The End of the ENIAC Despite its significant advances in computation in the 1940s, ENIACs tenure was short. On October 2, 1955, at 11:45 p.m.,  the power was finally shut off, and the ENIAC was retired. In 1996, precisely 50 years after ENIAC was publicly acknowledged by the government, the massive computer received its place in history. According to the Smithsonian, ENIAC was the center of attention in the city of Philadelphia as they celebrated being the birthplace of computation. ENIAC was ultimately dismantled, with sections of the massive machine on display at both Penn and the Smithsonian.