Regio MoisesIV-Lapu Lapu

Lesson VI – History & Development

Of Electronics

We will begin our discussion by tracing the roots of electronics. After J.J. Thompson

discovered the electron, the carrier of negative electric charge, many scientists were

fascinated and became curious about the behavior of this fundamental particle. Scientists

worked in laboratories until their ideas were perfected and made to proper use. The electron

was subjected to different conditions and was controlled in different media like vacuum, gas

and semiconductor materials.

Electronics

History OF Electronics

*1904 Sir John Ambrose Fleming invents the vacuum tube and diode.

*1906 Lee De Forest develops the triode. *1934 Electronic hearing aid invented *1947 John Bardeen, Walter H. Brattain, and

William B. Shockley of Bell Telephone Laboratories invent the

transistor. *1950s Germanium is used to make

semiconductors in transistors. Late in the 1950s, silicon begins to replace

germanium as a semiconductor material. *1954 The transistor radio is introduced and

becomes the largest selling item of the time *1958 Jack Kilby of Texas Instruments invents

the integrated circuit (IC). *1958 Robert Noyce develops an integrated

circuit that can be miniaturized and reliably manufactured *1958 Seymour Cray at Control Data Corp.

develops a transistorized computer

*1961 Silicon chips first appear *1967 First handheld calculator using an integrated circuit is made by Texas Instruments. *1968 Robert Noyce cofounds Intel. *1970 The bar code system is created. *1971 Intel introduces its popular 4004 4-bit microprocessor, starting the evolution of Intel's famous line of 386, 486, and Pentium processors

*1971 First video game and video disc introduced. *1979 Mattel Toy Company receives 1 millionth chip for electronic games *1980s Integrated circuits applied to computers *1981 32-bit silicon chips developed. 6*1984 Compact disc (CD) player introduced. *1984 CD-ROM (compact-disc read-only memory) is available

Some of the devices which would enable wireless telegraphy were invented before 1900. These include the spark-gap transmitter and the coherer with early demonstrations and published findings by David Edward Hughes (1880)] and Heinrich Rudolf Hertz (1887 to 1890) and further additions to the field by Édouard Branly, Nikola Tesla, Oliver Lodge, Jagadish Chandra Bose, and Ferdinand Braun. In 1896, Guglielmo Marconi went on to develop a practical and widely used radio system.

Wireless Telegraphy And Radio

In 1904, John Ambrose Fleming, the first professor of electrical Engineering at University College London, invented the first radio tube, the diode. Then, in 1906, Robert von Lieben and Lee De Forest independently developed the amplifier tube, called the triode. Electronicsis often considered to have begun with the invention of the triode. Within 10 years, the device was used in radio transmitters andreceivers as well as systems for long distance telephone calls.

In 1928 Philo Farnsworth made the first public demonstration of a purely electronic television. During the 1930s several countries began broadcasting, and after World War II it spread to millions of receivers, eventually worldwide. Ever since then, electronics have been fully present in television devices.

Television

Modern televisions and video displays have evolved from bulky electron tube technology to use more compact devices, such as plasmaand LCD displays. The trend is for even lower power devices such as the organic light-emitting diode displays, and it is most likely to replace the LCD and plasma technologies.

During World War II many efforts were expended in the electronic location of enemy targets and aircraft. These included radio beam guidance of bombers, electronic counter measures, early radar systems etc. During this time very little if any effort was expended on consumer electronics developments.

Radar And Radio Location

Computers

Mechanical examples of computers have existed through much of recorded human history, the first electronic computers

were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).Simple computers are small enough to fit into small pocket devices, and can be powered by a small battery.

In 1969, Ted Hoff conceived the commercial microprocessor at Intel and thus ignited the development of the personal computer. Hoff's invention was part of an order by a Japanese company for a desktop programmable electronic calculator, which Hoff wanted to build as cheaply as possible.

Micro processors

The first realization of the microprocessor was the Intel 4004, a 4-bit processor, in 1969, but only in 1973 did theIntel 8080, an 8-bit processor, make the building of the first personal computer, the MITS Altair 8800, possible. The first PC was announced to the general public on the cover of the January 1975 issue of Popular Electronics.

Development Of Electronics

Sony ICF-CL75iP Dream Machine Clock Radio

Samsung UN55F8000

SynLab Latest Hemispheric Analysis

Apple iMac 2013 27 inch

Intel Core i7 950 3.06GHz 8M L3 Cache LGA1366 MicroProcessor