Presentation is loading. Please wait.

Presentation is loading. Please wait.

The antique roadshow of computing. What do the following all have in common? – census taking – weaving (cloth) – multiplication – daughter of a famous.

Similar presentations

Presentation on theme: "The antique roadshow of computing. What do the following all have in common? – census taking – weaving (cloth) – multiplication – daughter of a famous."— Presentation transcript:

1 The antique roadshow of computing

2 What do the following all have in common? – census taking – weaving (cloth) – multiplication – daughter of a famous 19th century poet

3 ________________: – The act of mathematical calculation ________________: – The study of the principles and use of computing systems ________________: – A programmable machine designed to carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed, allowing the computer to solve more than one kind of problem.

4 Archaeologists found evidence of this from the 5th century B.C. in Greece. The earliest known written documentation of the Chinese abacus dates to the 2nd century BC Example: – Upper level has one bead with two positions. The bead counts for 5 – Lower level has four beads. The right-most column corresponds to ones, then tens, etc…

5 Blaise Pascal invented the mechanical calculator in 1642. – Used to help reorganizing the tax revenues of the French province of Haute-Normandie. – It could add and subtract directly and multiply and divide by repetition. Pascal went through 50 prototypes before presenting his first machine to the public in 1645. – He built around twenty more machines during the next decade, often improving on his original design. Pascaline firsts: – the first calculator to be used in an office (his father's to compute taxes) – the first calculator commercialized (with around twenty machines built) – the first calculator to be patented (royal privilege of 1649) – the first calculator to have a controlled carry mechanism which allowed for an effective propagation of multiple carries.

6 The Jacquard loom is a mechanical loom for manufacturing textiles with complex patterns. The Jacquard loom was the first machine to use punched cards to control a sequence of operations: 1805. The ability to change the pattern of the loom's weave by simply changing cards was an important precursor to the development of computer programming.

7 Charles Babbage: – 1791–1871 – An English mathematician and mechanical engineer who originated the concept of a programmable computer. – Babbage is credited with inventing the first mechanical computer that eventually led to more complex designs. He never actually completed construction, but the design was sound.

8 Ada Lovelace: – 1815-1852 – A mathematician, created a program for the Analytical Engine to calculate numbers in the Bernoulli sequence. – Lovelace is widely credited with being the first computer programmer – Ada is a programming language named after her.

9 Herman Hollerith – 1860-1929 – Invents a machine to assist in counting the U.S. Census – 1890 census is completed in 3 months – Hollerith creates the Tabulating Machine Company in 1896. – This company becomes IBM in 1924

10 __________: not mechanical __________: not analog ______________: programs and data are essentially the same.

11 Differential Analyzer – Completed in 1942. ENIAC: – Electronic Numeric Integrator and Computer – Completed 1945. – fills a room – Uses 19,000 vacuum tubes and 1,000 relays

12 A computing system is composed of – hardware: the physical components of the system – software: the instructions that control the hardware Hardware components include: – Motherboard Central processing unit (CPU) Memory (RAM / Drives) – IO Devices Video Card Sound Card Network Card 12

13 13 CPU

14 14 Slot for CPU Slots for cards Slot for RAM

15 Central Processing Unit – An electronic chip that performs instructions The brains of a computing system – A CPU can only perform very simple tasks: Can add/subtract/multiply/divide two numbers Can compare two numbers to see if one is smaller/larger Can copy/move data from one place to another – CPUs appear more powerful than this since these tasks are done very quickly 15

16 16

17 17

18 18

19 All information needed for computing must be storable – The instructions that a CPU must perform – The data that the CPU requires as input – The data that the CPU generates as output Computer storage (or memory) is used to remember these things 19

20 ICs (computer chips) are created by Robert Noyce & Jack Kilby in mid 60's – Noyce founds Intel in 1970 – Gordon Moore is the other Intel co-founder Moore is most widely known for a prediction he made that has been surprisingly correct. – Moore's Law: computer hardware will double in complexity every 18 months.

Download ppt "The antique roadshow of computing. What do the following all have in common? – census taking – weaving (cloth) – multiplication – daughter of a famous."

Similar presentations

Ads by Google