Because it is was already the standard for typewriters and when a better method came (Dvorak). People were already used to to QWERTY.
Note: Dvorak optimized his keyboard for speed in typing ordinary English language text by professional secretaries (e.g. business letters, memos, books, magazine and newspaper articles). There is no evidence that it would be any better than the QWERTY (or any other keyboard layout) for the often largely numerical computer data or use by nonprofessional typists.
Note: Other keyboard layouts are used on computers and typewriters in other countries (e.g. AZERTY, QUERTZ).
Paul Baran (born 1926) was one of the developers of packet-switched networks along with Donald Davies and Leonard Kleinrock. He was born in Poland, but his family moved to Boston in 1928. Baran did undergraduate work at Drexel University, obtained his Masters degree in Engineering from UCLA in 1959 and began working for the RAND Corporation in the same year. The development of a communication network that would withstand a nuclear attack was important to US defence strategy. Baran developed his ideas for packet-switched networks as a solution. Similar ideas were also being independently pursued by Donald Davies from the National Physical Laboratory in the UK and Leonard Kleinrock at MIT. Baran also provided a spark of invention to four other important networking technologies. He was involved in the origin of the packet voice technology developed by StrataCom at its predecessor, Packet Technologies. This technology led to the first commercial pre-standard ATM product. He was also involved with the discrete multitone modem technology developed by Telebit, which was one of the roots of Orthogonal frequency-division multiplexing which is used in DSL modems. Paul also founded Metricom, the first wireless Internet company which deployed the first public wireless mesh networking system and Com21 an early cable modem company. In all cases, he provided early ideas and gave credibility to strong groups of developers who then took those ideas far beyond Baran's original spark. Paul Baran also extended his work in packet switching to wireless-spectrum theory, developing what he called "kindergarten rules" for the use of wireless spectrum. In addition to his innovation in networking products, he is also credited with inventing the metal detector used in airports.
According to the Lisa specs on Low End Mac, the Lisa weighed 48 lbs.
Short Answer: 1 Megabyte is equal to 1,024 Kilobytes (1 MB = 1,024 KB)
---- Detailed Answer -- Bits, Bytes, Kilobytes, and more...
Computers are electronic devices so they view everything as either being ON or OFF. By stringing together groups of on and off messages, computers can store and process information.
The code for ON and OFF are represented numerically as either a one (1) or a zero (0). 1=ON, 0=OFF. Individually, each one or zero is called a Binary Digit or BIT for short.
A collection of 8 BITS (or eight zeros and ones) is equal to 1 BYTE
In human terms, 1 BYTE is equal to one character (a letter, number, space, dash, etc.)
For example, when you type the letter "A" your computer sees "01000001" and if you type the letter "a" in lowercase it sees "01100001." Each zero and one by itself is a BIT; each collection of eight BITS makes up one BYTE.
1 BIT = 1 BINARY DIGIT (either a 0 or a 1)
1 BYTE = 1 CHARACTER
1,024 BYTES = 1 KILOBYTE (KB) (one typewritten page is about 2 KB)
1,024 KILOBYTES = 1 MEGABYTE (MB) (a complete novel is around 2 MB)
1,024 MEGABYTES = 1 GIGABYTE (GB) (a stack of books 60 feet high would fit in 2 GB)
1,024 GIGABYTES = 1 TERABYTE (TB) (all the books in a major research library = 2 TB)
1,024 TERABYTES = 1 PETABYTE (PB) (every book in every US library = 2 PB)
1,024 PETABYTES = 1 EXABYTE (all the words ever spoken by humans = 5 EB)
They incorporated in 1977 (January) and went public in 1980.