LE EECS 1520 EXAM QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
What is a computer? - ANS Programmable machines that can do things for us
Ex. Microprocessor, laptop, phone, childs toy.
Abacus - ANS Very first computing device
FInger-powered calculator that used beads on rods for arithmetic
3000BC in Babylonia
Slide Rule - ANS a mechanical, analog calculator, popular before electronic devices, that uses
logarithmic scales on sliding rulers to perform multiplication, division, roots, and other complex
math by adding and subtracting log distances
Antikythera mechanism - ANS a remarkably complex, ancient Greek bronze device, often
called the world's first analog computer, used to predict astronomical positions and eclipses
Adding machine - ANS These devices marked the beginning of automated computation using
mechanical gears and wheels.
Clock - ANS 12th centruy time telling device
Difference engine - ANS an automatic mechanical calculator built to compute polynomial
functions, like logarithms and trigonometric tables, using the method of finite differences
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, (repeated addition) to eliminate human error in calculations crucial for science, engineering,
and navigation
Jacquard Loom (1801) - ANS Developed a reading machine using punch cards
Punch Cards - ANS Piece of paper with stiff holes where presence or absence of holes in pre-
defined positions to dictate the design of cloth. Later on Digital data to be entered in computer
was represented by the presence or absence of holes in predefined positio
Algorithm - ANS A finite set of unambiguous instructions used to solve a problem
George Boole - ANS Developed Boolean algebra, a method in which a code is denoted into 0s
and 1s so that a computer can comprehend it effectively
Claude Shannon - ANS Introduced an application that used Boolean logic to create digitial
computing machines.
Alan Turing - ANS Developed the Turing Machine - a machine that defines the limits and
capabilities of what algorithms can compute; it consists of an infinite tape, a read/write head,
and a finite set of rules, allowing it to manipulate symbols (like 0s and 1s) on the tape, providing
the foundation for modern computers by formalizing the concept of an algorithm.
Turing Test for AI - A test of a machines ability to display human-like intelligence by engaging in
natural conversation with a human evaluator. Goal is to make the computers abilites
indistinguishable from human.
Led the research group that was able to break the encrypted messages of the German Enigma
machine.
ENIAC - ANS First general purpose electronic computer
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS GRADED A+ 2025/2026
What is a computer? - ANS Programmable machines that can do things for us
Ex. Microprocessor, laptop, phone, childs toy.
Abacus - ANS Very first computing device
FInger-powered calculator that used beads on rods for arithmetic
3000BC in Babylonia
Slide Rule - ANS a mechanical, analog calculator, popular before electronic devices, that uses
logarithmic scales on sliding rulers to perform multiplication, division, roots, and other complex
math by adding and subtracting log distances
Antikythera mechanism - ANS a remarkably complex, ancient Greek bronze device, often
called the world's first analog computer, used to predict astronomical positions and eclipses
Adding machine - ANS These devices marked the beginning of automated computation using
mechanical gears and wheels.
Clock - ANS 12th centruy time telling device
Difference engine - ANS an automatic mechanical calculator built to compute polynomial
functions, like logarithms and trigonometric tables, using the method of finite differences
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, (repeated addition) to eliminate human error in calculations crucial for science, engineering,
and navigation
Jacquard Loom (1801) - ANS Developed a reading machine using punch cards
Punch Cards - ANS Piece of paper with stiff holes where presence or absence of holes in pre-
defined positions to dictate the design of cloth. Later on Digital data to be entered in computer
was represented by the presence or absence of holes in predefined positio
Algorithm - ANS A finite set of unambiguous instructions used to solve a problem
George Boole - ANS Developed Boolean algebra, a method in which a code is denoted into 0s
and 1s so that a computer can comprehend it effectively
Claude Shannon - ANS Introduced an application that used Boolean logic to create digitial
computing machines.
Alan Turing - ANS Developed the Turing Machine - a machine that defines the limits and
capabilities of what algorithms can compute; it consists of an infinite tape, a read/write head,
and a finite set of rules, allowing it to manipulate symbols (like 0s and 1s) on the tape, providing
the foundation for modern computers by formalizing the concept of an algorithm.
Turing Test for AI - A test of a machines ability to display human-like intelligence by engaging in
natural conversation with a human evaluator. Goal is to make the computers abilites
indistinguishable from human.
Led the research group that was able to break the encrypted messages of the German Enigma
machine.
ENIAC - ANS First general purpose electronic computer
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
