The document provides a history of computers from the ENIAC in 1946 to modern PCs and the internet. It describes the progression of computer hardware from early vacuum tubes to integrated circuits and silicon chips. Key developments included the invention of the transistor in 1958, integrated circuits in the 1960s, circuit boards in the 1970s, and the creation of the first personal computer by IBM in 1980. The internet began in the 1990s with early web browsers, search engines like Google, and social media sites such as Facebook emerging in the late 1990s and 2000s.
Vernon Technology Solutions offers clients the ability to rent computers and electronics and save money. Make sure to also check out their computer recycling services.
Automatically detects High Low voltage thresholds and protects appliance connected to it - By isolating that harmful power reaching to your appliance. Thus Smart Plug prevent damage to electrical and electronic equipment / appliances from power fluctuations, specifically over and under voltage levels of long duration. When the mains power supply fluctuates outside preset tolerances (nominally 170 and 270V) the power to your equipment is disconnected by Smart Plug.
ZC-102 Transformer comprehensive tester can measures of CT, I-V curve and curve, 5%, 10% error curve according to the polarity of the national standard, DC resistance, and ratio
Vernon Technology Solutions offers clients the ability to rent computers and electronics and save money. Make sure to also check out their computer recycling services.
Automatically detects High Low voltage thresholds and protects appliance connected to it - By isolating that harmful power reaching to your appliance. Thus Smart Plug prevent damage to electrical and electronic equipment / appliances from power fluctuations, specifically over and under voltage levels of long duration. When the mains power supply fluctuates outside preset tolerances (nominally 170 and 270V) the power to your equipment is disconnected by Smart Plug.
ZC-102 Transformer comprehensive tester can measures of CT, I-V curve and curve, 5%, 10% error curve according to the polarity of the national standard, DC resistance, and ratio
CT, PT And CVT
It help in measurement of high voltage And current.
* It provide low voltage and current to the electrical device.
* It’s measure application is in the protection system where relay is work on low amount of voltage and current.
Originally it was a job title.
It was used to describe those personnel (chiefly women) whose job it was to perform the repetitive calculations required to compute such things as navigational tables, tide charts, and planetary positions for astronomical almanacs.
This analyses the history and progress of computers and the internet based on the CAPE syllabus Unit 1 Module 1 for Information Technology. It also looks at telecommunication then and now.
4. Vacuum Tubes
• Invented in 1906 by Lee de Forest
• Big as a fist
• The tubes heat up and release electrons in
to the tubes
• Acts as switch or an amplifier
5. Transistors
• invented in 1958 by Jack C. Kilby
• Solved a lot of problems that vacuum tubes
had
• Had problems of its own
• Likelihood of faulty wiring increased the
more complex the circuits became
6. Integrated Circuits
• Made by Jack Kilby and Robert Noyce
• Thousands of bits on the size of a fingernail
Robert Noyce
Jack Kilby
7. Circuit Boards
• made by Paul Eisler in 1967
• thousands of bits on the size of a hand
8. Silicon Chip
• made by Jack Kilby and Robert Noyce
• millions of bits on the size of a finger nail
• made in 1970
Jack KilbyRobert Noyce
9. First PC
• made by Philip Don Estridge
• made in 1980
• named IBM PC
10. Internet Begins
• In 1990 Tim Lee, working with Robert
Cailliau at CERN propose a 'hypertext'
system, which is the first start of the
Internet as we know it today.