The Little-man Computer Lecture Notes - Edubirdie

University:
Massachusetts Institute of Technology
Course:
15.501/516 | Accounting
Academic year:

2023
Views:

365

Pages:

3
Author:

juvelarrbx

A Simplified Computer The LMC = Little man computer NETWORKING P1 I-O REGISTERS P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 400 400 400 400 400 400 PROCESSOR I’m L-Jo NEXT INSTRUCTION 12 INPUT M. RETRIEVE DATA REGISTER 400 I’m t-Jo 400 400 400 400 400 400 ADDRESS REGISTER 400 7 4 1 0 8 5 2 + 9 6 3 - ALU OUTPUT ADDRESS NEXT INSTRUCTION 4 CLOCK STATUS 002 MEMORY ADDS. DATA 001 010 002 007 003 008 004 003 005 002 … 005 017 011 018 019 008 020 400 021 400 022 400 023 400 … 400 997 998 400 999 400 RESET INSTRUCTION SET opcode symbolic 00 ADD 01 GET # 02 GOTO # 03 IF 0 GOTO # 04 INCR 05 LOAD 06 PUT # 07 STOP 08 STORE 09 SUB 10 SWAP 11 WRITE # SM 1 BASIC FACTS TO ASK ABOUT ANY COMPUTER LMC ANSWERS 1. MEMORY (A) BASIC UNIT 3 DECIMAL DIGIT NUMBER (B) MAXIMUM SIZE 1000 LOCATIONS 2. REGISTERS (A) HOW MANY 3 (B) NUMBERS 3 DECIMAL DIGIT NUMBER 3. INSTRUCTIONS (A) NUMBER 12 INSTRUCTIONS SM INTEL PENTIUM III ANSWERS 1. MEMORY (A) INDUSTRY BASIC UNIT 8 BINARY DIGITS (BITS) = 1 BYTE 8 BITS 0 0 1 0 1 1 0 1 (B) BASIC UNIT 32 BITS = 4 BYTES (C) TYPICAL SIZE MEMORY RAM: 64-768 MB L2 CACHE 128 - 512 KB 2. REGISTERS (A) HOW MANY (B) NUMBERS ABOUT 50 REGISTERS VARIOUS TYPES 3. INSTRUCTIONS (A) NUMBER ABOUT 500 SM 2 A “Real” Computer Clock Keyboard Mouse CPU 001 Instruction Counter 0101 1101 Registers Monitor Memory Laser printer 3

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