Geograhpy First Paprer MCQ with Answer

১ম অধ্যায়	প্রাকৃতিক ভুগোল
২য় অধ্যায়	পৃথিবীর গঠন
৩য় অধ্যায়	ভুমিরুপ পরিবর্তন
৪র্থ অধ্যায়	বায়ুমন্ডল ও বায়ুদুষণ
৫ম অধ্যায়	জলবাযুর উপাদান ও নিয়ামক
৬ষ্ঠ অধ্যায়	জলবাযু অঞ্চল ও জলবায়ু পরিবর্তন
৭ম অধ্যায়	বারিমন্ডল
৮ম অধ্যায়	সমুদ্রস্রোত ও জোয়ার-ভাটা
৯ম অধ্যায়	জীবমন্ডল
১০ম অধ্যায়	ব্যবহারিক মানচিত্র ও স্কেল

1.4. Pointing Systems

Computer users frequently find it easier to point to something on a screen or at an item of text or graphical material they are entering into the computer, A number of devices are available to assist in fulfilling this need.

1.4.1. Mouse

A mouse is a hand-movable device that controls the position of the, cursor on a screen. It has a box with buttons on the top and a ball on the bottom. The box is placed on a flat surface, with the user's hand over it. The ball's movement on the surface causes the cursor to move.

1.4.2. Joystick and Trackball

Joysticks are used with video games for user input. These devices may also be used to move the cursor around a screen to facilitate input to a graphical display. A trackball is similar in operation to the joystick, It uses a billiard-sized ball to position the cursor. Several keyboard manufacturers have integrated them directly into their keyboards.

1.4.3. Light Pen

The earliest pointing device is the light pen. This device is placed close to a screen or monitor and turned on. A photo sensor inside the light pen detects the scanning beam sweeping back and forth across the screen. Accompanying circuitry converts the pen's reading into the position of the pen on the screen. Light pens are used to select items from a list or menu displayed on the screen. Light pens are used to select items from a list or menu displayed on the screen and to draw graphic displays on the video screen.

1.4.4. Digitizer Pad

A digitized pad looks like a graph pad with a pointer. It functions like a light pen on a display screen except that the pad is mounted horizontally. As the pointer is moved on the pad, the corresponding point on the screen is illuminated. The digitized pad is useful in converting graphic input, such as charts, graphs, and blueprints into patterns that can be manipulated and stored by the computer.