JPH04172587A - Ic memory card - Google Patents

Abstract

PURPOSE:To prevent the malfunction of an operator and system by displaying the readout and writing via the IC memory card. CONSTITUTION:An information address is designated by a terminal 5 every time a memory IC 1 is read out, and the required information is outputted from a terminal 4 when a card enable terminal 6 is turned to be an active state 'L', and an LED 7 blinks simultaneously. Similarly, at the time of writing, the card enable terminal 6 is turned to be an active state and the operation is indicated by the blink of the LED 7. Therefore, the malfunction of the operator or system is eliminated and the highly reliable system can be constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an IC memory card incorporating a memory IC.

[Conventional technology]

Figure 4 is a schematic block diagram of a conventional IC memory card, 1
FIG. 15 is a perspective view of the IC memory card of FIG. 4. In the figure, (1) is the memo + IC, (2) is the power supply terminal, (3) is the ground terminal, (4) is the data terminal, C5) is the address terminal, (6) is the card enable terminal, and 0η is the The connection terminal portion Q2 is the IC memory card body.

Next, the operation will be explained. When reading data stored in memory IC port 1 in FIG. ), the data to be read is output from the data terminal (4).

[Problem to be solved by the invention]

Conventional IC memory cards are configured as 1 or more, so when removing the IC memory card from a terminal device such as a personal computer, the operator cannot visually determine whether the operation is being performed (reading or writing). do not have. As a result, if the card is removed during operation, the data in the IC memory card may be destroyed, or the system may malfunction, such as going out of control.

This invention was made to solve the above-mentioned problems, and an object of the present invention is to obtain an IC memory card that allows human eyes to confirm that the IC memory card is in operation.

[Means to solve the problem]

The IC memory card according to the present invention has a light emitting diode connected between a card enable terminal and a power supply terminal.

[Effect]

In the IC memory card according to the present invention, when the card enable terminal becomes active, the light emitting diode 1 lights up and it is possible to visually confirm that the IC memory card is in operation. An example of this will be described with reference to the drawings. 1st
The figure is a schematic block diagram of an IC memory card.

FIG. 2 is a perspective view of the IC memory card of FIG. 1. In the figure, C1) to t6L03) and U are the same as those shown in the conventional example shown in Fig. 11m4 and Fig. 5, so their explanation will be omitted. (7) is a light emitting diode, and (8) is a resistor for limiting the current flowing through the light emitting diode (7).

Next, the operation will be explained. In FIG.

When reading data stored in the memory ICI), the address of the read data is input to the address terminal (5
), and when the card enable terminal (6) is set to the active state ~L', the read data is output from the data terminal (4), and at the same time the light emitting diode (
Similarly, in the case of a 0 write operation in which a current flows through 7) and lights up, the card enable terminal (6) becomes active, and the light emitting diode (7) indicates that the card is in operation.

In the above embodiment, the case where the card enable terminal (6) is set to the active state/L# is explained, but even when the card enable terminal (6) is operated to the #H'' active state, the light emitting diode (7) is turned on. Figure 3 shows an IC according to another embodiment of the present invention.
FIG. 2 is a block diagram of a memory card. In the figure, [1]
-(8) are equivalent to those shown in FIG. (9) is an inverter. Even when the inverter (9) is inserted and the card enable terminal (6) is active at .H'', the data to be read is output from the data terminal (4), causing the light emitting diode (7) to emit light.

[Effects of the Invention] As described above, according to the present invention, since the IC memory card itself is configured to display that the IC memory card is in the process of reading and writing, it is possible to prevent erroneous operation by the operator or malfunction of the system. 0, which has the effect of building a highly reliable system.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of an IC memory card according to an embodiment of the present invention, FIG. 2 is a perspective view of the IC memory card of FIG. 1, and FIG. 3 is a schematic block diagram of an IC memory card according to another embodiment of the present invention. Schematic block diagram of. 4 is a schematic block diagram of a conventional IC memory card, and FIG. 5 is a perspective view of the IC memory card shown in FIG. . In the figure, [1] is the memory IC, (2) is the power supply terminal, (3) is the ground terminal, (4) is the data terminal, and (5)
is the address terminal, (6) is the card enable terminal, (7
) is a light emitting diode, (8) is a resistor, (9) is an inverter, Ql) is a connection terminal section, and @ is an IC memory card body. In the figures, the same reference numerals indicate the same or equivalent parts. Figure 1 Figure 2 Figure 3N Figure 4

Claims (1)

[Claims] An IC memory card equipped with a memory IC, the IC memory card comprising display means for displaying, by means of a card enable signal, that the IC memory card is in read and write operations.