lec1-3-Arch&MemOrg

lec1-3-Arch&MemOrg - WPI ECE2801 Foundations of...

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WPI ECE2801 Foundations of Embedded Computer Systems Lecture 3: MSP430 Architecture and Memory Organization
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EE2801: Foundations of Embedded Systems Lecture 3 Review: Data Representation Rules for interpreting numbers, meaning given to an arbitrary collection of binary bits Characters: ASCII code Integers: unsigned, singed (sigh-magnitude, two’s complement), BCD Fractional numbers: fixed-point, Floating- point
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EE2801: Foundations of Embedded Systems Lecture 3 Data Representation Example Given an arbitrary 8-bit binary number : an unsigned integer between 0 and 255 a two’s complement integer between -128 and +127 a fraction between 0 and 0.99609375 a fraction between –7.9375 and + 7.9375 a floating point number an ASCII character two packed BCD digits anything else I can express in 8 bits
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EE2801: Foundations of Embedded Systems Lecture 3 A Basic Computer System CPU INPUT/OUTPUT DEVICES Keyboard Printer Monitor Disk Drives MEMORY DATA CODE Control Lines Address Lines Data Lines Memory Addresses
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EE2801: Foundations of Embedded Systems Lecture 3 A Basic Computer System CPU: the Center Processing Unit The heart and brain of the computer CPU Architecture - Internal registers, Instructions Controls memory and I/O ( through Address bus, Data bus, Control bus)
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lec1-3-Arch&MemOrg - WPI ECE2801 Foundations of...

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