Abstract: A packing bow of electronic apparatus featured in providing a characteristic diagram showing performance of electronic apparatus to be packaged to visually appeal performance of the packaged electronic apparatus to user or the like.

Abstract: A peripheral device for a computer is disclosed, which employs desired code setting means for determining a desired code and a comparator for comparing the thus determined code and a command from a host computer, whereby the control operation can be smoothly effected by the command from the host computer. Also, a graphic printer is provided as a peripheral device which employs a plurality of sampling clocks of which the phases are different from that of a reference sampling clock. These sampling clocks are selectively used to enable a video signal of a different phase from a computer to be printed out excellently.

Abstract: A peripheral device for a computer is disclosed, which employs desired code setting means for determining a desired code and a comparator for comparing the thus determined code and a command from a host computer, whereby the control operation can be smoothly effected by the command from the host computer. Also, a graphic printer is provided as a peripheral device which employs a plurality of sampling clocks of which the phases are different from that of a reference sampling clock. These sampling clocks are selectively used to enable a video signal of a different phase from a computer to be printed out excellently.

Abstract: A PWM (Pulse Width Modulation) control circuit for printing apparata comprises a memory for storing digitized image data, a main converter connected to the memory for converting upper bits of the digitzed image data into a main pulse-width modulated signal based on a first unit time duration, a sub-converter connected to the memory for converting the rest of the bits of the digitized image information into a sub pulse-width modulated signal based on a second unit time duration, and a drive circuit connected to the main converter and sub-converter for generating the driving signal in accordance with the main pulse-width modulated signal and sub pulse-width mnodulated signal. The amount of transferred digital tone data per horizontal line of a whole printing screen is reduced and the color concentration characteristics of the thermal head are appropriately maintained within an acceptable range.