Replies
What is the difference between hardware interrupt-Andre Davis
You have a tremendous post-Andre Davis, but as a reader, I expected to see various incidence on how Hardware Interrupt differs as the questions had requested (Dattatraya et al., 2020). Other than that you have a well-organized post, short and direct to the point which gives your reader a humble time when going through our centre. From your post, I have the following information to add; a Hardware interrupt is generated and sent to CPU which is caused by some actions that are taken by the device of hardware (Dattatraya et al., 2020). For instance, the keystroke depressions and the movement of mouse that are caused by hardware are believed to generate hardware interrupts. The main difference between hardware and software interrupts that the external device makes hardware interrupt while an executing program makes software. Further Interrupts are most used by the device of hardware which indicates the state of electronic or physical state changes which requires more attention (Dattatraya et al., 2020). Interrupt are also used when implementing the multitasking conducted by computer, particularly in real-time computing.
Reference
Dattatraya Dixit, H., Lin, F., Holland, B., Beadon, M., Yang, Z., & Sankar, S. (2020, April). Optimizing Interrupt Handling Performance for Memory Failures in Large Scale Data Centers. In Proceedings of the ACM/SPEC International Conference on Performance Engineering (pp. 193-201).
Q1.Evolution of PSTN-Olawale Ojo
I entirely agree with your post, Olawale Ojo. You stated very well what PSTN stands for; you provided a brief description which makes your reader understand the concept of evolution of PSTN (Stocker, 2020). Also, your post well presented; it has a good flow, thus giving your reader a humble time when going your post. From our post, I have the following information to add TPTN allowed the subscribers of various sites to communicate using their voice (Stocker, 2020) easily. The PSTN enabled users to make the landline telephone calls where people could freely communicate and share the vital message. It was made of switches at centralized points using a network which was functioning as a node to allow the communication to takes place between two points of the system (Sacco, 2020. The public switched PSTN was used as an aggregate of the world’s circuit for telephone were free to operate in national, regional and in local telephone operations which provided an infrastructure together with services for public telecommunication (Sacco,2020).
Reference
Stocker, V. (2020). Innovative Capaimportantcations for All-IP Networks: A Network Economic Analysis of Evolution and Competition in the Internet Ecosystem (Vol. 22). Nomos Verlag.
Sacco, F. M. (2020). The evolution of the telecom infrastructure business. In Disruption in the Infrastructure Sector (pp. 87-148). Springer, Cham.
Dominique Nance – Circuit Vs. Packet Switching
A great post-Dominique Nance, you have discussed very well about Circuit and packet switching and how the two concepts differ. I entirely agree with your post, and I have the following to support your post, packet-switched is defined as a network that moves data in a separate and a small block basing on the destination that address packet (Leclerc et al., 2020) ever. Both Circuit switching and packet switching are two different approaches used in switching, and they are connected to multiple communication devices (Leclerc et al., 2020). The significant difference between the two networks is that packet switching is connectionless, while circuit switching is a connection-oriented (Luo et al., 2020). Packet –switching is mostly applied when optimizing the channel capacity that is available in digital telecommunication networks like in computer networks. It also when minimizing the transmission latency as well as increasing the robustness of the communication (Luo et al.,2020).On the other hand, circuit switching is used to provide the continuous transfer without necessarily utilising the overhead that is associated with packets thus maximizing the use of available bandwidth of that particular communication( Luo et al.,2020).
Reference
Leclerc, B., Marcé, O., Chiaroni, D., & Uscumlic, B. (2020). U.S. Patent No. 10,701,466. Washington, DC: U.S. Patent and Trademark Office.
Luo, R., Hua, N., Zhu, K., Zhao, C., Guo, B., Yang, C., & Zheng, X. (2020, May). Optical Caching Network: A Seamless Bridge Between Electrical Packet Switching and Optical Circuit Switching. In 2020 Conference on Lasers and Electro-Optics (CLEO) (pp. 1-2). IEEE.
Eyerusalem
I like your post-Eyerusalem, you have a short and direct to the point post, which encourages your reader to read several time without being bored (Jiuyue et al., 2020). From your post, I have the following information to add, the device I/O is defined as hardware that uses human to communicate with the computer. Both Mice and keyboards take a physical movement which uses social users output to convert them into input signals which enable the computer to create a better understanding of that output (Jiuyue et al.,2020). The device of I/O is believed to communicate using signals that are sent via wires (Ong et al., 2020). Such a device connects with computers using ports such as serial or a parallel port which is used as a standard set of laws to connect the multiple devices. When using memory-mapped IO, OS is used to allocate the buffer in both memory and I/O device where it uses the pad to send the data used in CPU (Ong et al., 2020). The device is connected directly to a specific memory that is located in I/O device which is used to transfer the block of data to the user without necessarily accessing/O device which operates with CPU.
Reference
Jiuyue, M. A., Yungang, B. A. O., Rui, R. E. N., & Xiufeng, S. U. I. (2020). U.S. Patent No. 10,579,394. Washington, DC: U.S. Patent and Trademark Office.
Ong, B. L., Shirasat, G. J., Gajendra, S. A., & Anand, A. (2020). U.S. Patent Application No. 16/813,237.
Comparing and Contrasting serial .parallel and USB- Luis Irizarry
Let me start by recognizing that you have done excellent work, Luis Irizarry. Your post is well organized, obvious and direct to the point which gives our reader a humble time to read your book several without being bored (Copeland et al., 2020). I enter agree with your post, and I support the information you presented. Here are the few things, I would like to add from your post, Serial transmission requires one line enables a clear communication to take place as well as transferring data from one place to another. In contrast, parallel transmission requires many lines since one bit follows one another in serial communication. USB is significant as it needs to have a complete software protocol stack (Copeland et al., 2020). Some older devices have USB of 1.1or 2.0. Another USB allows data to move from the verge often in terms of speed of the regular parallel port. It is also considered to be faster than the serial port ( Wendi et al.,(2020, The average serial port has the potential of transferring about 150 kbps while USB can go up to 12 Mbps.
Reference
Copeland, S. A., Thompson, M., Teixeira, N., & Battaglia, W. (2020). U.S. Patent Application No. 16/293,101.
Wendi, X., YuRong, Z., & Xia, P. (2020, April). Research on New Macro-Moving 3D Mouse Based on 3-UPS Space Parallel Mechanism. In Journal of Physics: Conference Series (Vol. 1486, p. 072024).