Chapter Overview

1
Chapter Overview

• The Development of the Computer
• The Role of a Computer Service Professional

2
The Abacus
3
The Analytical Engine
4
The First Electrically Driven Computer
5
The Digital Electronic Computer

• 1939 Atanasoff-Berry Computer (ABC)
• 1943 Colossus I
• 1945 Electronic Numerical Integrator and
  Computer (ENIAC)
• 1960s1970s Golden era of the mainframe computer

6
Milestones of Modern Computing

• 1971 first 4-bit multiprocessor (MP) 4004 1
  MHz
• 1978 first 16-bit MP 8086 and coprocessor 8087
• 1981 first PC by IBM (MS-DOS)4.7 MHz
• 1986 first 32-bit computer80386
• 1992 first Pentiumi586
• 1999 processor speed exceeds 1 GHz

7
The Role of a Computer Service Professional

• Technician troubleshoot hardware and software
• Scholar continuously update skills and broaden
  knowledge
• Diplomat cultivate good customer service skills

8
Chapter Summary

• The abacus was the first computing device.
• Charles Babbage conceived the first mechanical
  computer.
• The first electrical computer computed results of
  the 1890 United States census.
• The Atanasoff-Berry Computer (1939) was the first
  digital computer.
• Todays computer service professional must be a
  technician, scholar, and diplomat.