Abstract: A communication terminal device comprises a memory capable storing a plurality of pages of received information, and a printer for printing the information stored in the memory. A read sequence from the memory to the printer is determined in accordance with a send command.

Abstract: A data communication system comprises calculation means for calculating a communication charge to be charged when a given amount of data is to be transmitted, and display means for displaying the calculated communication charge prior to the data transmission.

Abstract: A communication terminal device comprises a memory capable storing a plurality of pages of received information, and a printer for printing the information stored in the memory. A read sequence from the memory to the printer is determined in accordance with a send command.

Abstract: An image signal coding apparatus includes reference and coding line change point detection circuits, reference line shift registers, a coding line shift register, a symbol detection circuit, coding and reference line ROM tables, and a code determination circuit. The coding line change point detection circuit receives a serial reference line image signal in synchronism with a serial coding line image signal. The reference line shift registers receive serial change point data in the reference line image signal and output parallel reference line change point data. The coding line shift register receives serial change point data in the coding line image signal and outputs parallel coding line change point data. The symbol detection circuit monitors output states of the reference and coding line shift registers. A run length counter counts the number of pixels between the change points in the coding line image signal.