Evaluation of the performance metrics of a 4 bit universal shift register and its implementation in an arithmetic & logic unit

2017 ◽  
Author(s):  
Suchismita Sengupta ◽  
Ananya Dastidar
Keyword(s):  
Performance Metrics ◽  
Shift Register ◽  
Arithmetic Logic Unit ◽  
Universal Shift Register ◽  
Logic Unit

Comparative Analysis of CNTFET and CMOS Logic based Arithmetic Logic Unit

2017 ◽  
Vol 9 (4) ◽  
pp. 04018-1-04018-4
Author(s):  
K. Nehru ◽  
◽  
T. Nagarjuna ◽  
G. Vijay ◽  
◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Arithmetic Logic Unit ◽  
Logic Unit

Prototype Smart Home Berbasis Internet of Things untuk Meningkatkan Efisiensi Penggunan Listrik

2021 ◽  
Vol 7 (1) ◽  
pp. 01-08
Author(s):  
Safira Salsabila ◽  
Dian Kasoni
Keyword(s):  
Internet Of Things ◽  
Smart Home ◽  
Technological Progress ◽  
Electronic Devices ◽  
Shift Register ◽  
The Internet ◽  
Cost Of Electricity ◽  
Input And Output ◽  
The Cost ◽  
Logic Unit

Abstract— Microcontroller is a hardware in which there is a processor, input and output, RAM, ROM, System Bus, Contol Unit, Shift Register and Aritmatic Logic Unit. Microcontroller is able to activate some electronic devices such as led, buzzer, motor, lighting and so on. Currently, at the home of the writer has many light switches in each room and often causes the user to become disoriented when turning on the light and the condition of the gate in the yard was that close to the roads often led to congestion when it would either open or close the house gates. The activation method of lights and other electronic devices still use manual method, so it is inefficient and causing excessive cost of electricity. For that built a system to activate every device in every room at the house based internet of things which will be activated by a website display on the internet so that the lights in each room and other device will activate.. With the creation of this system is expected to reduce the cost of electricity on writer’s house and as a first step to realize the smart home in the utilization of technological progress, especially in the field of microcontroller.   Intisari— Mikrokontroller merupakan sebuah perangkat keras yang didalamnya terdapat sebuah processor, input dan output, RAM, ROM, System Bus, Contol Unit, Shift Register dan Aritmatic Logic Unit. Mikrokontroller ini mampu mengaktifkan beberapa perangkat elektronika seperti led, buzzer, motor, lampu penerangan dan sebagainya. Saat ini, di rumah pribadi penulis memiliki banyak saklar lampu di setiap ruangan dan sering mengakibatkan setiap pengguna kebingungan saatmenghidupkan lampu dan gerbang di halaman rumah memiliki jarak yang dekat dengan jalanan seringkali menimbulkankemacetan saat akan membuka ataupun menutup gerbang rumah. Metode pengaktifan perangkat lampu dan alatelektronik yang lain masih menggunakan cara manual, sehingga tidak efisien dan menimbulkan pengeluaran biaya listrik yangberlebih. Untuk itu dibangun sebuah sistem untuk mengaktifkan setiap perangkat yang ada di ruangan rumah penulis berbasisInternet of Things yang akan diaktifkan oleh sebuah tampilan website melalui internet sehingga secara otomatis lampu disetiap ruangan dan perangkat lainnya akan aktif. Dengan dibuatnya sistem ini diharapkan dapat mengurangi pengeluaran biaya listrik di rumah pribadi penulis dan sebagai langkah awal mewujudkan smart home dalam pemanfaatan kemajuan teknologi, terutama dibidang mikrokontroller.

Improving Performance of a Multi-Bit Arithmetic Logic Unit

2021 ◽  
Vol 26 (1) ◽  
pp. 40-53
Author(s):  
A.N. Yakunin ◽  
◽  
Aung Myo San ◽  
Khant Win ◽  
◽  
...  
Keyword(s):  
High Speed ◽  
Operating Time ◽  
Arithmetic Logic Unit ◽  
Maximum Delay ◽  
Sequential Organization ◽  
Quartus Ii ◽  
Logic Unit

In modern microprocessors to reduce the time resources the arithmetic-logic units (ALU) with an increased organization of arithmetic carry, characterized by high speed, compared to ALU with sequential organization of the arithmetic carry, are commonly used. However, while increasing the bit number of the input operands, the operating time of ALU of ALU with the accelerated arithmetic carry increases linearly depending on the number of bits. Therefore, the development of ALU, providing higher performance than the existing known solutions, is an actual task. In this work the analysis of ALU with sequential and accelerated organization of the arithmetic carry has been performed. To increase the speed of the operation, a multi-bit ALU has been developed. The simulation of ALU circuits has been executed in Altera Quartus –II CAD environment. The comparison has been performed by the number of logical elements and the maximum delay as a result of modeling the ALU circuits for 4, 8, 16, 32, and 64 bits. A scheme for checking the results has been implemented to confirm the reliability of developed ALU. As a result, it has been found that when performing operations with the 64-bit operands, the developed ALU reduces the maximum delay by 53 % compared to ALU with sequential arithmetic carry and by 35.5 % compared to ALU with the accelerated arithmetic carry, respectively.

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