We declare that the work presented in this project is the result of the research and research work we have done under the supervision of Dr. ) for mechanical engineering in 2019 and was confirmed in terms of style and content. Mainol Hasan Department of Mechanical Engineering, Sonargaon University (SU), for his guidance and valuable advice in carrying out and completing the study without which it would have been impossible to carry out the work.
Mostofa Hossain, Associate Professor and Head of the Department of Mechanical Engineering, (SU) for granting permission to use the Department's laboratory facilities. Author thanks the teachers who directly or indirectly helped us, which was very necessary to complete the thesis work. Finally, we are also grateful to the Vice Chancellor of Sonargaon University (SU) for his general support in completing the project work. Despite the ergonomic difference between tablet and computer workstation interaction, the default keyboard configuration on most tablet devices is similar to the layout of a computer workstation, where the keyboard is located at the bottom of the screen.
The touchscreen display is operated by finger or digital pen (stylus) movements instead of the mouse, trackpad and keyboard on larger computers. The form of the tablet was conceptualized in the mid-20th century (Stanley Kubrick depicted fictional tablets in the 1968 science fiction film A Space Odyssey) and prototyped and developed in the last two decades of that century.
Scope of the project
The laptop or tablet computer and its associated operating system began with the development of pen computers. Electrical devices with data input and output on a flat information display existed as early as 1888 with the counting autograph, which used a sheet of paper as display and a pen attached to electromechanical actuators. Throughout the 20th century, devices with these characteristics were imagined and created, either as blueprints, prototypes, or commercial products.
In addition to many academic and research systems, several companies released commercial products in the 1980s, with various input/output types tested.
Raspberry Pi
Raspberry Pi 4 can be used as a small, dual-screen, desktop computer as well as robot brain, smart home hub, media center, network AI core, factory controller, and much more. The speed and performance of the Raspberry Pi 4 is a step up from earlier models to provide the user with a complete computing experience. Whether you're editing documents, browsing the web with a bunch of tabs open, juggling spreadsheets or creating a presentation, you'll find the experience smooth and very recognizable, but on a smaller, more energy-efficient and much more cost-effective effective machine.
It has upgraded USB capacity along with two USB 2 ports, you will find two USB 3 ports, which can transfer data up to ten times faster than previous models. This computer uses the Raspberry Pi 4 Broadcom BCM2711 SoC with a 1.5 GHz 64-bit quad-core ARM Cortex-A72 processor, with 1 MB of shared L2 cache. The Raspberry Pi 4 has full gigabit Ethernet (throughput is not limited as it is not passed through the USB chip.) It also supports Wi-Fi and Bluetooth system.
Various operating systems for the Raspberry Pi can be installed on a MicroSD, Mini SD or SD card, depending on the card and available adapters; seen here is the MicroSD slot located at the bottom of a Raspberry Pi 4 board. It works with Raspberry pi 3 & 4 and requires no further modification of the Raspbian boot image.
Video
It can deliver up to 3 amps of current while maintaining the voltage at 5V DC through its high quality USB type reversible connector. Both sides of the board marked with + and - two batteries joints, pay attention: do not reverse the positive and negative of the battery, otherwise it will burn out the power supply board. Automatic sleep mode, double-click the button, the lights turn on, and then double-click turns off the lights.
And then double click will work with SOS will start SOS, and then . double click turns off the light). A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated as LiPo, LIP, Li-poly, lithium-poly and others), is a rechargeable battery of lithium-ion technology that uses a polymer electrolyte instead of a liquid electrolyte. These batteries provide higher specific energy than other lithium battery types and are used in applications where weight is a critical feature, such as mobile devices and radio-controlled aircraft.
While it is possible to use large numbers of small-capacity cells to obtain the necessary levels of power and energy to drive a vehicle, some manufacturers and research centers are looking to large-format lithium-ion cells for this purpose. capacity over 50 Ah. . With higher energy content per cell, the number of cells and electrical connections in a battery pack would certainly be reduced, but the risk associated with individual cells of such high capacity could be greater. As with other lithium-ion cells, LiPos work on the principle of combining and dissociating lithium ions from a positive electrode material and a negative electrode material, with the liquid electrolyte providing a conductive medium.
To prevent the electrodes from directly touching each other, there is a microporous separator that allows only the ions and not the electrode particles to migrate from one side to the other. The HDMI Alt Mode for USB Type-C connector allows HDMI source devices to use a USB Type-C connector to connect directly to HDMI-compatible displays and deliver HDMI signals and functions through a simple cable without the need for a protocol and connector are required adapters or dongles. This allows two of the most popular solutions for connectivity to come together: the small, reversible and multifunctional USB Type-C connector used by smartphones, tablets and PC products, and the HDMI connector, the leading display interface. of.
Type A/B is defined in the HDMI 1.0 specification, type C is defined in the HDMI 1.3 specification, and type D/E is defined in the HDMI 1.4 specification. The HDMI Alternate Mode allows a user to connect the reversible USB-C connector with the HDMI source devices (mobile phone, tablet, laptop). This cable connects to video display/sink devices using any of the native HDMI connectors.
FILAMENT
Speaker
Many times the speakers are placed in the case either above the keyboard or below the keyboard; near the corners.
Male Female Connector
Screw for Joint
Upper part this called tablet
Lower Part this called a dock station
CHAPTER – 4
DISCUSSION AND CONCLUSION
- COMPARISON OF OUR LAPTOP WITH CONVENTIONAL LAPTOP IN MARKET
- ADVANTAGE OF LOW COST LAPTOP
- CONCLUSION
- References
Mobility: The first and foremost advantage of this laptop is the lightweight, compact size, the built-in battery in the laptop that makes it easy to move from one place to another. Internet access is the second benefit for the increase in demand for the laptop because it offers the ability to access the Internet through wireless technology Wi-Fi. Considering whether tablets will replace laptops in the near future requires research into the needs of home users.
Based on all the results and information, it seems that tablets are likely to be preferred by the average home user in the future, but any changes will likely take some time for the technologies to fully meet people's needs. At the moment, laptops for the home user seem to adequately meet their needs, but if the technology is given enough time to develop and the user becomes more exposed to touchscreen navigation, tablets will be the way of the future. Proceedings of the 14th Conference on Human-Computer Interaction with Mobile Devices and Services (Mobile HCI 2012).
Park YS, Han SH (2010b) One-handed thumb interaction of mobile devices from the perspective of input accuracy.
