People
George Boole
created Boolean Algebra - logical foundations of digital computing circuitry
Claude Shannon
used Boolean logic to create digital computing machines - information and coding
(john) Von Neumann Architecutre
"stored program", binary internal coding, CPU-memory (input/output) organization, "fetch-decode-execute" instruction cycle
Von Neumann Architecture
Central processing unit (a memory, mass storage, IO), earlier computers (eg ENIAC) hard wired to do one task, rewired for different, stored program computer can run diff programs
Alan Turning
Led wwII research group that broke code for the Germany Enigma machine.
Proposed the Turning Machine- for defining computability
Grace Murray Hopper
created first Compiler cuz she was tired if writing machine code by hand- greatly improved pogramming speed and efficiency.
High level language -> compiler -> low level languge
Margret Hamilton
-led the team who coded programming for the guidance computer
-considered a pioneer in software engineering
Gordon Bell
-the minicomputer digital equipment corporation (DEC) developed first mini computers in 1960-83.
-created major competition for IBM, Univac (who only built mainframes)
-cheaper ($20,000 vs $1M for mainframe early 1960s dollars)
Bill Gates and Paul Allen
approached Ed Roberts of MITS(company that created Altair) and promised a complier for basic language- Microsoft was born
Steve Wozniak and Steve Jobs
1st Apple computer (1976)