Gallaudet, CSC 201

#### miller1956

U. Memphis, PSYC 4305
Excerpt: ... efore the Eastern Psychological Association in 1954. Begin with the observed fact that people can repeat back eight decimal digits, but only nine binary digits . Since there is a large discrepancy in the amount of information recalled in these two cases, we suspect at once that a recoding procedure could be used to increase the span of immediate memory for binary digits . In Table 1 a method for grouping and renaming is illustrated. Along the top is a sequence of 18 binary digits , far more than any subject was able to recall after a single presentation. In the next line these same binary digits are grouped by pairs. Four possible pairs can occur: 00 is renamed 0, 01 is renamed 1, 10 is renamed 2, and 11 is [p. 94] renamed 3. That is to say, we recode from a base-two arithmetic to a base-four arithmetic. In the recoded sequence there are now just nine digits to remember, and this is almost within the span of immediate memory. In the next line the same sequence of binary digits is regrouped into chunks of three. ...

#### Recursion

Wisc Parkside, CS 242
Excerpt: ... same return type). Your method must use recursion; even if you can come up with an iterative alternative, we insist on a recursive formulation! 1. Print in Binary Inside a computer system, integers are represented as a sequence of bits, each of which is a single digit in the binary number system and can therefore have only the value 0 or 1. The table below shows the first few integers represented in binary: 0 1 0 0 0 1 1 0 0 1 1 1 1 1 1 Each entry in the left side of the table is written in its standard binary representation, in which each bit position counts for twice as much as the position to its right. For instance, you can demonstrate that the binary value 110 represents the decimal number 6 by following this logic: binary digits place value Basically, this is a base-2 number system instead of the decimal (base-10) system we are familiar with. Write a recursive method public void printInBinary(int num) that prints the binary representation for a given integer. For ...

#### practprob3soln

Maryland, ENEE 0103
Excerpt: ... 03/20/02 09:49:52 #include <stdio.h> #include <math.h> int main(int argc, char *argv[]) { int number=0; int leftover=0, currdigit; int currpower, currplace; base.c 1 number = atoi(argv[1]); /*Converts string C-L argument to an integer*/ printf("Number in Decimal= %d\n",number); /*Decimal print*/ printf("Number in Hex = %x\n",number); /*Hexadecimal print*/ printf("Number in Binary = "); /*Binary print start*/ /*Finds out the number of binary digits we're going to need, using log-base 2*/ /*This returns the power of 2.so for example, if the number were 19, it would return 4.and this means we need to go up to, and including a digit for the 2^4(or 16's place)*/ currdigit = log(number)/log(2); /*Note, binary number place value goes 2^0 then 2^1 then 2^2, etc.so we do need to go down to the 2^0 to get the "ones" place.consequently, we have currdigit>=0)*/ while(currdigit>=0) { currplace = pow(2,currdigit); /*gets current place value of binary digit*/ printf("%1d",number/currplace); /*prints a one if cur ...

#### rec14

Purdue, CS 180
Excerpt: ... inary digits. Produces a sum and a carry value which are both binary digits Summing the corresponding bit pairs by column is only half the job! As you add up each column, you must also consider that a bit might be carried over from the FullAdder A logical circuit that performs an addition operation on three binary digits . Produces a sum and carry value, which are both binary digits . How to add 4bit numbers? Use four full-adders Complex Circuits Transistors are connected to form basic logic gates, which are then combined to build more advanced circuitry Example: Microchips Also known as IC (Integrated Circuit) A miniaturized electronic circuit that has been manufactured in the surface of a thin substrate of semiconductor material. Even simple circuits consisting of tens or hundreds of transistors were quite large Chapter18 Computers and Society Positive Impact of Technology Potential Dangers of Technology Positive Impact The Internet and Web As information sources the maj ...

#### wk1_ref

Allan Hancock College, CS 9032
Excerpt: ... , 2008 COMP9032 Week1 4 Examples To base 2 To convert (11.25)10 to binary For whole number (11)10 division (by 2) 11 5 2 1 0 0.25 0.5 0.0 1 1 0 1 Examples To base 16 To convert (99.25)10 to hexadecimal For whole number (99)10 division (by 16) 99 6 0 0.25 0.0 3 6 For fraction (0.25)10 multiplication (by 16) 4 For fraction (0.25)10 multiplication (by 2) 0 1 (99.25)10=(63.4) hex (11.25)10=(1011.01) 2 S2, 2008 COMP9032 Week1 5 S2, 2008 COMP9032 Week1 6 Number Conversion Between binary and octal Direct mapping based on the observation: Number Conversion Between binary and octal (cont.) Binary to octal The binary digits (bits) are grouped from the radix point, three digits a group. Each group corresponds to an octal digit. (abcdefgh. jklmn) 2 = (a 2 + b) 2 6 + (c 2 2 + d 2 + e) 2 3 + (f 2 2 + g 2 + h) + (j 2 2 + k 2 + l) 2 3 + (m 2 2 + n 2 + 0) 2 6 = (0ab 2 ) 8 2 + (cde ...

#### Week10

Allan Hancock College, WIN 11134
Excerpt: ... ators are not the same as logical operators, and they can never be used interchangeably. Because bitwise operators operate at bit level, then they deal with binary digits with can only have the values 0 or 1, which are also known as Off and On, or False and True. Week 10, Slide 14 of 46. Copyright Michael O'Malley CQU 2001. Bitwise AND (&) Binary ANDing of 2 binary digits is 1 if and only if both binary digits are equal to 1. Bitwise AND (&) Truth Table A 0 0 1 1 Week 10, Slide 15 of 46. B 0 1 0 1 A&B 0 0 0 1 Copyright Michael O'Malley CQU 2001. Bitwise AND (&) (cont .) To Bitwise AND 2 numbers together, you first need to convert the number from whatever format they are in to binary (base 2), and then do the Binary ANDing on each digit in turn, using the above truth table. 13 (Decimal) = 0001101 (Binary). 105 (Decimal) = 1101001 (Binary). 1310 & 10510 = 00011012 & 11010012 -00010012 = 23 + 20 = 8 + 1 = 910 Week 10, Slide 16 of 46. Copyright Michael O'Malley CQU 2001. Bitwis ...

#### CS111_Assignment_06

Coker College, CS 111
Excerpt: ... traveled 3) 4) 5) 6) Pennies for Pay Math Tudor Average Rainfall Saving Account Balance Lab_06: Binary to ASCII Decoder Continued from Lab_05 _ _ CS110 Assignment_06 Spring 2007 Page 2 _ _ Opposite to the encode_ascii.exe program, this program convert the binary string back to the ASCII format. In case there is no ASCII counter part, it just print the hexadecimal value of the character. a) A program take the binary string from keyboard entry b) A program read in the binary digits from a ...

UC Davis, ECS 15

#### ECGR2181-Lecture01

UNC Charlotte, ECGR 2181
Excerpt: ... Introduction to Digital Logic ECGR2181 Lecture Notes 1 Logic System Design I 1-1 Computer System: Layers of Abstraction ! Logic System Design I 1-2 Big Idea #1: Transformations Between Layers How do we solve a problem using a computer? A systema ...

#### introduction_2

Wisconsin, ECE 352
Excerpt: ... ECE/CS 352 INTRODUCTION TO ECE/Comp Sci 352 DIGITAL SYSTEMS FUNDAMENTALS COURSE CONDUCT Instructors Charles Kime Yu Hen Hu Ed Brann Fahad Ahmad Text Logic and Computer Design Fundamentals, Mano and Kime, 1997. ECE/Comp. Sci. 352 Course Materials ...

#### introduction_4

Wisconsin, ECE 352
Excerpt: ... ECE/CS 352 INTRODUCTION TO ECE/Comp Sci 352 DIGITAL SYSTEMS FUNDAMENTALS ECE/CS 352 COURSE CONDUCT (Continued) COURSE CONDUCT Instructors Charles Kime Yu Hen Hu Ed Brann Fahad Ahmad Text Logic and Computer Design Fundamentals, Mano and Kime, 19 ...

#### Arrays_Part_I

FIU, COP 2210
Excerpt: ... ta values are assigned by using the index. The values may be assigned to the array serially or randomly. Example 8.5 7 Define a class called binaryDigits that converts an integer value into its binary equivalence. Solution The class receives an integer value. Define a method that decomposes the number into binary digits . Return the binary digits . Algorithm for converting an integer into binary. 1. Divide the original number by 2 and (a) Record the remainder. (b) Set the number to the quotient 2. 3. Repeat the process until the new number becomes zero. When the process stops, rewrite the result starting with the last value first. Let us use the number 53 to test this algorithm. 53/2 = 26 remainder 1 26/2 = 13 remainder 0 13/2 = 6 remainder 1 6/2 = 3 remainder 0 3/2 = 1 remainder 1 2/2 = 0 remainder 1 Hence the binary equivalence of 53 is 1 1 0 1 0 1 Principal variables are: The number An array to store the remainder An integer value to which to set the size of the array An index ...

#### final.0

UCSD, MATH 187
Excerpt: ... . ., 25 in the obvious manner. Then convert each number to binary (each using 5 binary digits ). Then break the message into blocks of 4 binary digits (so letters may get split into separate blocks), and perform a monoalphabetic substitution on each block. Then, perform a block rectangular transposition on the binary digits using a permutation of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. Then, convert the binary digits 5-at-a-time back into whole numbers between 0 and 31, inclusively. Assume that English text has 1.6 bits of information per character. How many whole numbers of ciphertext are needed, on average, to guarantee that there is a unique decryption? 5. Alice and Bob are using the RSA cryptosystem, with modulus 901. Alice's public exponent is 15. What is her secret exponent? 6. Below are two roulette wheels, each with an inner and outer wheel, and each of the four random variables displayed takes each of the values 0, 1, 2 with positive probability. For each wheel, either label the sectors so that the inner and o ...

#### CS111_Assignment_07

Coker College, CS 07
Excerpt: ... (will be discussed during the lab session) 2) 3) 4) Safest Driving Area Days Out Order Status Lab_06: Binary to ASCII Decoder Continued from Lab_05 Opposite to the encode_ascii.exe program, this program convert the binary string back to the ASCII format. In case there is no ASCII counter part, it just print the hexadecimal value of the character. _ _ CS110 Assignment_06 Spring 2007 Page 2 _ _ a) A program take the binary string from keyboard entry b) A program read in the binary digits ...

#### q01prep

CSU Northridge, COMP 122
Excerpt: ... COMP 122 Example Quiz/Exam Problems Find the 2s complement of the following 8-bit binary integers. 00101001 11001101 11111111 10000000 Add the following pairs of 8-bit 2s complement binary integers. 00110010 + 01100101 01111111 + 00000001 10010000 + 10000010 Convert the following 8-bit 2s complement binary integers to signed decimal integers. 00001111 00100110 01000110 The number of binary digits that can be represented in n bits is what? The largest positive 2s complement integer that can be represented in n bits is what? The largest negative (most negative) 2s complement integer that can be represented in n bits is what? Use the ASCII table to look up the codes in decimal for the following characters. A r ; 3 Q t 4 Z u ! 9 The following table shows the list of all binary digits in 4 bits. Columns 2, 3, 4, and 5 represent 3 different interpretations for assigning integer values to these patterns. Fill in the columns with ...

#### a

Duke, CPS 149
Excerpt: ... s still quite simple. Input The first line of input contains an integer N, (1 <= N <= 1000), which is the number of binary addition problems that follow. Each problem appears on a single line containing two binary values separated by a single space character. The maximum length of each binary value is 80 bits ( binary digits ). Note: The maximum length result could be 81 bits ( binary digits ). Output For each binary addition problem, print the problem number, a space, and the binary result of the addition. Extra leading zeroes must be omitted. Sample Input 3 1001101 10010 1001001 11001 1000111 1010110 Sample Output 1 1011111 2 1100010 3 10011101 ...

#### hw6

St. Mary's CA, MATH 01
Excerpt: ... Math 1: Fundamental Mathematical Concepts I Assignment 6 Due Wed Oct 12 Justify your answers using relevant terms and concepts from the course. 1. Long and DeTemple 3.2 #5,8,9,13 2. Binary (Base 2) (a) What is the largest number that can be written in binary notation using exactly 8 binary digits ? (b) How many different numbers can be written in binary notation using at most 8 binary digits ? (c) Use representational reasoning (not inductive reasoning) and part 2(b) to solve problem #8 of the midterm 1 study guide. 3. Compute the following sums using the units,strips,mats representation showing all exchanges. (a) 34 + 67 (b) 145 + 38 (c) 199 + 1 4. Compute the following sums using place-value diagrams. (a) 34 + 67 (b) 145 + 38 (c) 199 + 1 5. Compute the following difference using the units,strips,mats representation showing all exchanges. (a) 101 - 67 (b) 243 - 145 (c) 200 - 1 6. Compute the following differences using place-value diagrams. (a) 101 - 67 (b) 243 - 145 (c) 200 - 1 7. Long and DeTemple 3.3 # 9, ...

#### figure-3.2

Purdue, CS 250
Excerpt: ... 2 5 = 32 2 4 = 16 23 = 8 22 = 4 21 = 2 20 = 1 Figure 3.2 The value associated with each of the first six positions of the binary number system. Each binary digit corresponds to the next power of two. ...

#### NumSystems

Evansville, LEGO 101
Excerpt: ... l Conversion To convert a number from binary to decimal simply express the binary digits as powers of two and add them up in the decimal number system. For example the number 0110101 becomes 25 + 24 + 22 + 20 = 32 + 16 + 4 + 1 = 53 in base 10. So we can write 01101012 = 5310 Decimal to Binary Conversion To convert from decimal to binary we must successively find all of the powers of two in the decimal number. We typically begin with finding the largest power of two and working down. For example suppose we want to convert 26510 to binary. The largest power of 2 in 265 is 28 = 256. Subtract 256 from 265 to get 9. The largest power of two in 9 is 23 = 8. Subtract 8 from 9 to get 1 which is 20. So 265 is 28 + 23 + 20. Thus we can write 26510 = 1000010012. Binary to Octal and Octal to Binary Conversion The octal number system uses base 8. Since 8 = 23 there is a simple way to convert base 8 numbers to base 2 and vice-versa. Each of the 8 digits 0 to 7 in octal is represented by 3 binary digits as shown in the Tabl ...

#### Cpt_3_Multiple_Choice

WVU, GEOG 350
Excerpt: ... Multiple Choice Questions 1. The following lists show a series of numbers and some binary equivalents. Each binary number consists of four binary digits (bits). Match each number to its representation in the binary system by writing its sequence letter in the final column: Number a. 15 b. 0 c. 9 d. 6 e. 10 Binary 0000 1001 0110 1111 1010 (a)(e)? 2. Which form of representation does a paper map use? a. analog b. digital c. binary d. decimal 3. Which is NOT a commonly used coding scheme for images? a. JPEG b. GIF c. MP3 d. TIFF 4. The table lists some commonly used attributes. For each write down the measurement scale (nominal, ordinal, interval, ratio) most often used to record it: Attribute Building height Temperature in oC Land capability Soil type Atmospheric pressure Scale 5. Which is NOT characteristic of discrete objects? a. they may include points, lines, and areas b. they completely cover the space c. they can overlap d. they can be counted 6. When weather forecasters isolate a cold front on a wea ...

#### Lecture04

California State University, Monterey Bay, CS 240
Excerpt: ... Homework Reading Finish K&R Chapter 1 (if not done yet) Start K&R Chapter 2 for next time. Programming Assignments Finish HW1 assignment (if not done yet) Continue HW2 assignment 1 Octal Dump Use od x to see hex dump of a file od x trim.in 00000000 0909 4e68 . 2020 . 00000120 7061 7274 . 0a0a Octal and Hexadecimal numbers Why dump in Hex instead of Octal? ASCII code for representing characters 2 Octal and Hex Numbers People normally deal in numbers base 10 Computers normally deal in numbers base 2 The problem: Reading a long string of 1s and 0s not easy Conversion between base 2 and base 10 not easy The solution: Convert binary digit strings to Octal or Hex Easily done because 23 = 8 and 24 = 16 3 Octal and Hex Numbers Look at a long string of binary digits in groups Group from right by 3 digits for Octal Group from right by 4 digits for Hex See the following examples: ...