1. The shortcut key to open Task Manager in Windows is Ctrl + Shift + Esc.

2. This shortcut key is valid for Windows 10, Windows 11, and Windows 8.1.

3. Ctrl+Shift+Esc is a useful shortcut, specially created to quickly open the Task Manager.

All the mentioned errors are handled by OS. The OS is continuously monitoring all of its resources. Also, the OS is constantly detecting and correcting errors.

In Excel 2003, the number of rows is 65,536. Each worksheet in Excel 2003 consists of 65,536 rows and 256 columns.

1. E-governance refers to the use of information and communication technologies (ICT) to increase the reach and efficiency of public services.

2. “E” in e-governance stands for ‘electronic’.

3. E-governance can be defined as the application of information and communication technology (ICT) to provide government services, exchange of information, transactions, and integration of pre-existing services and information portals.

Parsing, in high-level language transformation, is the analysis of code syntax using formal grammar rules. It checks for errors and creates a parse tree representing the code's structure. This tree guides the generation of machine code or program execution, ensuring correct interpretation and execution of the source code.

Dot matrix printers use printer ribbons. A dot matrix printer is a type of impact printer that produces characters and images on paper by striking a series of dots against an ink-soaked ribbon. The ribbon transfers ink onto the paper to create text and graphics. Dot matrix printers were widely used in the past for tasks such as printing invoices, receipts, and multipart forms.