Abstract: An electronic device can include a tubular frame to receive and support electronic components and a shell that defines a portion of the exterior surface of the device and an internal volume sized to encompass the electronic components and tubular frame. The shell can be removably attachable to the tubular frame by a user actuated locking mechanism.

Abstract: An electronic device may be provided with a housing surrounding an interior portion of the electronic device. The housing may have one or more layers of material such as fabric layers, polymer layers, and metal layers. An outer fabric layer may have openings between adjacent strands of material such as openings between adjacent warp and weft strands. An inner housing layer such as a layer of plastic or metal may have openings that define airflow entrance and exit ports. The outer fabric layer may overlap the openings of the airflow entrance and exit ports. A fan may draw cooling air into the interior through the airflow entrance port and may expel air through the airflow exit port. An airflow controller in the interior may be controlled by control circuitry based on measurements from temperature sensors. The airflow controller may steer airflow to cool appropriate electronic components in the interior.

Abstract: An electronic device may have electrical components mounted in an interior region of the electronic device. A housing may surround the interior region and may separate the interior region from an exterior region that surrounds the electronic device. Arrays of recesses may be formed on opposing inner and outer sides of the housing. The arrays may be laterally offset from each other along the housing. The recesses on the inner and outer sides of the housing may meet at passageways within the housing. During operation of the electronic device, air may flow through the inner recesses, the passageways, and the outer recesses to cool electrical components within the interior region. Lighting may be provided for the housing. Light-emitting devices such as light-emitting diodes may be received within cavities in the housing. Light guiding structures, diffusers, reflectors, and other structures may be used to help adjust illumination from the light-emitting devices.

Abstract: Techniques and apparatus to provide improved visibility to user input devices, such as keys, are disclosed. In low light conditions, key legends can be difficult to distinguish. For example, often keys have legends on them to visually distinguish them from one another, but in low light conditions it can be difficult for users to visually identify the different keys. The legends can be textual and/or graphic. Hence, according to one embodiment, light from a nearby (e.g., attached) display device can be used to provide illumination to the user input devices (e.g., keys). The user input devices can be configured to include reflective optical components to enhance reflection of light and thereby improve visibility of the keys or the legends thereon.

Abstract: Techniques and apparatus to provide improved visibility to user input devices, such as keys, are disclosed. In low light conditions, key legends can be difficult to distinguish. For example, often keys have legends on them to visually distinguish them from one another, but in low light conditions it can be difficult for users to visually identify the different keys. The legends can be textual and/or graphic. Hence, according to one embodiment, light from a nearby (e.g., attached) display device can be used to provide illumination to the user input devices (e.g., keys). The user input devices can be configured to include reflective optical components to enhance reflection of light and thereby improve visibility of the keys or the legends thereon.