operations performed by computer system Inputting Storing Processing Outputting Controlling The internal structure of a computer looks like above: Input unit: Input unit links the external environment with the computer system. Data and instruction must be entered to the computer before performing any competition. Data or instructions can be entered through input devices eg. Key board‚ or any other input devices. Input unit transferred this data into binary coded in short input unit performs
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destination. Program 5: Count number of 1’s in a byte. Program 6: Multiplication of two unsigned 8-bit binary numbers. Program 7: Division of two unsigned 8-bit binary numbers. Program 8: Searching of a byte element in a data block. Experiment No.3: Arithmetic‚ Logical & Branching operations. Program 9: Multi byte binary addition Program 10: Multi byte BCD addition Program 11: Multi byte binary subtraction 3 Program 12: Testing condition of a bit in a byte of data. Program 13: Finding largest
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Lab 1.1 Reading Binary Exercise 1.1.1 Create a mapping similar to figure 1-1 for the decimal number 2931 using either paper and pencil or a word document. Exercise 1.1.2 Create a mapping similar to figure 1-2 for the binary number 110 using either paper and pencil or a word document. Exercise1.1.3 Create a mapping similar to figure 1-3 for the binary number 11 using either paper and pencil or a word document. Exercise 1.1.4 Create an expanded mapping similar
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signed integers can be represented in digital computers and explain the differences. 2. Which one of the three integer representations is used most often by digital computer systems? 3. How are complement systems like the odometer on a bicycle? 4. Do you think that double-dabble is an easier method than the other binary-to-decimal conversion methods explained in this chapter? Why? 5. With reference to the previous question‚ what are the drawbacks of the other two conversion methods?
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CPEN 214 - Digital Logic Design Binary Systems C. Gerousis © Digital Design 3rd Ed.‚ Mano Prentice Hall Digital vs. Analog • An analog system has continuous range of values – A mercury thermometer – Vinyl records – Human eye • A digital system has a set of discrete values – Digital Thermometer – Compact Disc (CD) – Digital camera Benefits of using digital Analog signal Digital signal • Advantages of using Digital: • Cheap electronic circuits • Easier to calibrate and adjust • Resistance
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Assignment #2 Review Questions: 1.Convert each of the binary numbers to decimal numbers: A. 2 B. 4 C. 7 D. 11 E. 12 F. 18 G. 21 H. 31 I. 205 J. 227 2.Convert each of the decimal numbers to binary: A. 111 B. 10011 C. 11100 D. 101110 E. 111001 F. 1010110 G. 1011110 H. 1110000 I. 10010100 J. 11100110 3.Convert each of the octal numbers to decimal numbers: A. 30 B. 68 C. 80 D. 142 E. 240 F. 846 4.Convert each of the octal numbers to binary numbers: A. 111100 B. 1011000 C. 10101000 D. 1101001000
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What a computer is When asked what a computer is‚ most people would describe a box on their desk at home. A computer can actually take a variety of shapes‚ sizes and forms. It is easiest to define a computer in terms of what it can do. A computer does the following four tasks: 1. A computer accepts input. 2. A computer processes the input in some way. 3. A computer produces output. 4. A computer stores data. We will now explain each of these tasks in greater detail. 1. Accepting input An
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6/28/2012 Number Systems Chapt. 2 Common Number Systems System Base Symbols b l Used by humans? Used in computers? Decimal 10 0‚ 1‚ … 9 Yes No Binary 2 0‚ 1 No Yes Octal 8 0‚ 1‚ … 7 No No Hexadecimal 16 0‚ 1‚ … 9‚ ‚ ‚ ‚ A‚ B‚ … F No No 1 6/28/2012 Quantities/Counting (1 of 3) Decimal 0 1 2 3 4 5 6 7 Binary 0 1 10 11 100 101 110 111 HexaOctal decimal 0 0 1 1 2 2 3 3 4 4
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Name:Date:Professor: Converting Decimal to Binary and Binary to Decimal (20 points) Instructions for the Binary Conversion Exercise: NOTE! LOG ON TO SKILLSOFT TO DOWNLOAD THE LAB INSTRUCTIONS AND START THE LAB. In computers binary code is the language that communicated between applications. Binary Code is a coding system using only digits 0 and 1 to represent a letter‚ digit or other characters in a computer. It is hard to imagine that huge and hard calculations are done on computers applications
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sometimes referred to as reflected binary‚ because the first eight values compare with those of the last 8 values‚ but in reverse order. The gray code is often used in mechanical applications such as shaft Decimal Binary Gray encoders. Modulo 2 Arithmetic 0 0000 0000 This is binary addition with the carry ignored. 1 0001 0001 Converting Gray Code to Binary A. write down the number in gray code 2 0010 0011 B. the most significant bit of the binary number is the most significant bit of
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