• सुखार्थी त्यजते विद्यं विध्यार्थी त्यजते सुखम्सु sखर्थीन: कुतॊ विद्या कुतॊ विध्यार्थीन: सुखम् ||
  • “Luxury people leave knowledge, but a student leaves Luxury No knowledge for one who seeks Luxury, No luxury for student”
  • न चोर हार्यं न च राज हार्यं न भात्रू भाज्यं न च भारकारि |व्ययं कृते वर्धत एव नित्यं विद्याधनं सर्वधनप्रधानम ||
  • Cannot be snatched away by thief, cannot be snatched away by king, Cannot be divided among brothers, Not heavy either If spent daily, it always keeps growing. The wealth of knowledge is the precious of wealth of all”

Solution to problems M.Morris Mano -II




Problem 5.13 Computer System Architecture by by M Morris Mano revised 3rd edition and problem 4.1 from 3rd edition

Problem:    Design a 4 bit-combinational circuit decrementer using four full adder circuits

Solution:

A – 1 = A +  2’s complement of 1

2’s Complement of  0001 is    1110   +    1       =        1111

 

i.e  A – 1 =   A + 1111