Abstract: A keyboard includes a main body formed with a receiving recess, a transparent panel mounted on the main body and having formed with a plurality of openings, and a lamp seat mounted in the receiving recess and provided with a plurality of indication lamps each partially inserted into a respective one of the openings. Thus, the corners of each of the openings have different angles, so that the light beams emitted from each of the indication lamps have different angles by refraction of the corners of the respective opening of the transparent panel to produce a diffusion effect of different angles on the transparent panel, thereby enhancing the aesthetic quality of the keyboard.

Abstract: A computer monitor screen has a screen lens, a connection seat having an upper rack and a lower groove, a pair of hanging mounts, and a plurality of fastening devices. The screen lens has a plurality of through holes. The connection seat further has a plurality of through apertures to match the through holes of the screen lens. Each of the hanging mounts has a slide slot to receive the upper rack. The screen lens is inserted in the lower groove of the connection seat. Each of the fastening devices passes through the corresponding through aperture of the connection seat and the corresponding through hole of the screen lens to fasten the connection seat and the screen lens.

Abstract: A computer monitor screen has a screen lens, a connection seat having an upper rack and a lower groove, a pair of hanging mounts, and a plurality of fastening devices. The screen lens has a plurality of through holes. The connection seat further has a plurality of through apertures to match the through holes of the screen lens. Each of the hanging mounts has a slide slot to receive the upper rack. The screen lens is inserted in the lower groove of the connection seat. Each of the fastening devices passes through the corresponding through aperture of the connection seat and the corresponding through hole of the screen lens to fasten the connection seat and the screen lens.

Abstract: A shunt receptacle and plug device has a main case, a head cover, an end cover, and a pair of disk fasteners. The end cover has a receptacle set and a pair of opposite notches. The main case has a pair of plug blades, an electric source socket set, a pair of telephone socket slots, two pairs of opposite insertion grooves, two opposite positioning apertures, and a top illumination indicator. The head cover has a pair of opposite circular holes, a top oblong hole, and a pair of side holes. The end cover covers the main case. The head cover covers the main case. Each disk fastener is disposed on the head cover.

Abstract: A shunt receptable and plug device has a main case, a head cover, an end cover, and a pair of disk fasteners. The end cover has a receptable set and a pair of opposite notches. The main case has a pair of plug blades, a post, an electric source socket set, a pair of telephone socket slots, two pairs of opposite insertion grooves, two opposite positioning apertures, and a top illumination indicator. The head cover has a pair of opposite circular holes, a top oblong holes, and a pair of side round holes. The end cover covers the main case. The head cover covers the main case. Each disk fastener is disposed on the head cover.

Abstract: A monitor filter includes a rectangular frame including a first cover and a second cover engaged with the first cover, the first and second covers being of identical structure, each of the first and second covers having two upper corners formed with a semi-cylindrical recess having screw threads such that the rectangular frame will have two threaded holes at two upper corners thereof when the first and second covers are joined together, and a pair of arms each having a bottom provided with a slip-proof material and a downwardly extending screw threadedly engageable with each of the threaded holes, whereby the monitor filter can be adjusted to position right in front of a monitor.

Abstract: An improvement in the structure of a monitor filter includes a generally rectangular primary frame having an inverted L-shaped cross section, four brackets at four corners each provided with a spring-loaded ball, a pair of secondary frames slidably engaged with two sides of the primary frame, each of the secondary frames being provided with two lugs each having a horizontal slot formed with a plurality of teeth engageable with the ball, and an anti-radiation screen mounted on the primary frame by a rectangular member, whereby the secondary frames can slide in or out of the primary frame to adapt for use with monitors of different sizes.

Abstract: A monitor filter includes a rectangular frame having cover, a pair of adjusting knobs fitted in two recesses formed close to two upper corners of the rectangular frame, and a pair of arms each having a bottom provided with a soft pad and a downwardly extending screw engaged with a respective one of the adjusting knobs, whereby the monitor filter can be easily and rapidly adjusted in position.

Abstract: A computer monitor supporting bracket has a main body, a locating seat, a supporting block, a clamping device, and a framework. The main body is provided with a flat top and a receiving groove at the bottom for the locating seat to be pivotally mounted thereon via a pin and an adjusting bolt. The adjusting bolt can be rotated to regulate the position of the engaged locating seat and the main body either upwards or downwards into a desirable angle. In addition, the supporting block is mounted to the locating seat via screws being secured to the bottom end of a stepped shaft. The stepped shaft pivotally joined to the locating seat and a washer permits the supporting block and the locating seat to be switched left and right correspondingly. A fending plate disposed at the one top side of the supporting block is abutted against the underside of the locating seat to provide the supporting force for bearing heavy load.

Abstract: The keying of a document is facilitated by securing the document in a holding panel and causing a ruler to be indexed downwardly across the document by pressing a depression bar which is operatively connected to the ruler by a toothed rack.