Category Archives: Computer Science

Computer Science (CS) and Information Technology (IT) related items will be posted under this category. Topics include, but not limited to, system administration, hardware/software troubleshooting, coding/programming (PHP, HTML, Java, Python, etc) and more.

Adding Mobile Data and Mobile Hotspot to Quick Settings

Quick Settings is the top drop-down panel on Android devices. The following will is a simplified guide for adding mobile data and mobile hotspot (and others: data saver) to quick settings on Samsung Galaxy Devices.

I can confirm this method still works with Android 7, 8, 9 and 10 with Samsung One UI 1.0 and One UI 2.0. This will work on both network-locked and unlock devices.

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Database Management System for Online Ticket Sales

Database Management System (DBMS) of online ticket sale for the stage play “Kusa-Paba” at the University of Calgary Theater.

Abstract and Project Description

The University of Calgary Theater has 500 available seats. This particular DBMS is built to allow users to order and purchase tickets online. Tickets sold by agents can also be entered to the system using the agents’ interface. Only a designated set of seats are available for sale. Some are as for reserved guests and others are designated as House Seats hence they are not available for sale. The designated seats for sale are categorized for different price levels; $50.00, $30.00 and $20.00 (Figure 1). The price levels are further broken down for adults and children.

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Maximum Input Variables WP Error

The max_input_vars limitation error is a very common issue that most WordPress web developers and website owners may encounter at some point in their career. Few days ago, my website also experienced the same problem. The solution is very simple; increase the value assigned to max_input_vars in the PHP configuration file on the web server. However, depending on server setup, you may have to do few more things to get this problem fixed.

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Recover Data from Internal Hard Drives

Computers are made of multiple different components. Not all components are vital to the operations of a computer. For example, failure of a disk drive (DVD/BlueRay) would most likely have little to no impact on other functions of a computer. But a failure of a vital component such as the processor, power supply, or malfunctioning of a hard drive will lead to a situation where the computer is no longer operational. Do not panic. You may be able to recover data from such computers using either an external enclosure or using an IDE/SATA to USB adapter.

You can recover data from most “broken” computers even if you are not tech-savvy. If you perform the recovery at home (or business) by yourself, you will save from $100 to $2000 CAD (2016 estimates) on data recovery costs. Continue reading Recover Data from Internal Hard Drives

Installing a router and routing basics

Modem, Router and Modem-Router combination

The term routing has been in used long before the Internet age. In the past, routing refers to the distribution of mail or landline (traditional) phone calls through mail sorting centers or telephone switching centers. Today, a router is an electronic networking device that acts as the “middle guy” between two or more data lines from different devices. A router manages the packets (data) migration between computers within the local area network (LAN) and provides distributed Internet (Wide Area Network) access to the local clients. Continue reading Installing a router and routing basics