Question

English speech of environment day

Answer 1

Answer:

Good morning to the Excellencies, my respected teachers and my dear friends. The topic of my speech is Environment. Environment is the surrounding in which we live. It is the source of life. Our whole life is dependent to the environment. It directs our life and determines our proper growth and development. Good or bad quality of social life depends on the quality of our natural environment. The need of human beings for food, water, shelter and other things depends on the environment around us. There is a balanced natural cycle exists between environment and lives of human beings, plants and animals. Human society is playing vital role in degenerating the natural environment

which in turn negatively affects the lives on this planet. All the human actions in this modern world directly impact the whole ecosystem.

All the actions have brought a big change in this planet which resulted in many environmental problems. Increasing demand of technologies and industries in the modern time impacts the nature. The increasing invention of new technologies has changed the interaction of people with environment which permits more population to grow.

Answer 2

Explanation:

hlo good morning

azitech is one of the leading manufacturers of modern computing systems and equipment designed for smart homes in iot based environment. in their recent design of smartcontroller for state of the art smart homes, they are considering a novel cpu with 4-bit data bus, memory module and i/o interface . the novel cpu is required to have all the functional units of a conventional microprocessor. however, the design of the arithmetic unit of the alu requires a special 4-bit computation unit called audiff, which would be used to practically process all subtraction operation using simple addition [ e.g 2-1 -> 2 + (-1)]. the logic unit of the alu is required to operate using 2-bit data bus which evaluates logical less than, greater than and equality operations on data received from the memory. a high speed memory data bus is required for data transmission between the memory and cpu & i/o. the memory bus is required to transmit data, addresses and control signal between the cpu, memory and i/o with relatively low frequency with close proximity. the memory is required to operate synchronously with the cpu clock cycle. since the smartcontroller would be used in smart homes to connect and control several devices through some network, a high data processing from the various devices with some sort of memory errors are anticipated. due the speed of the cpu, a relatively high speed memory with low cost design , capable of handling errors is expected with optimal data transfer rate.

i) you are required to design a logical circuit that would accomplish the task of audiff. indicate all components of logic circuit design necessary for this implementation. show appropriate truth tables, logic equations and circuit diagrams.

ii) design a logic circuit that would implement the task of the logical unit of the ALU. show all appropriate truth tables , logic equations and circuit diagrams.

iii) justify and describe the mode of data transmission required to achieve high speed data transfer between the memory and the cpu