CN106782661B - A manual PROM data curing device - Google Patents

Abstract

The invention proposes a manual PROM data curing device, which belongs to the field of electronic technology, and includes a starting circuit U1, an address generating circuit U2, a voltage generating circuit U3, a data curing circuit U4, and a data reading circuit U5. The device can solidify the data one by one into the designated PROM storage unit by manual control, and can also read the data one by one from the designated storage unit of the PROM by manual control. The invention has the advantages of being simple, practical, small in volume, light in weight, low in cost and easy to carry. The invention can be used for data curing and data detection of the PROM in the airborne electronic product.

Description

A manual PROM data curing device

technical field

The invention belongs to the field of electronic technology and relates to a manual PROM data curing device.

Background technique

At present, all airborne electronic products need to store data. Due to the harsh environment on board, in order to prevent data loss, it is a good choice to use PROM (programmable read-only memory) to store data. On the other hand, PROM can also store the key of encryption program. A PROM data curing device is needed to solidify the data into the PROM. The present invention designs a manual PROM curing device, which has the advantages of small size, light weight, low cost, and portability. It can not only be used in the research and development process of airborne products, but also can be easily carried to the field for product upgrades, Product maintenance or troubleshooting, etc.

Contents of the invention

The purpose of the present invention is to propose a simple, practical, small in size, light in weight, low in cost, and portable PROM data curing device. Using the present invention, data can be solidified into designated PROM storage units one by one by hand control. Data can also be read out one by one from the storage unit designated by PROM by manual control. It can not only be used in the research and development process of airborne products, but also can be easily carried to the field for product upgrades, product maintenance or troubleshooting.

Technical scheme of the present invention is:

The described manual PROM data curing device is characterized in that: it includes a starting circuit U1, an address generating circuit U2, a voltage generating circuit U3, a data curing circuit U4, and a data reading circuit U5;

The starting circuit U1 is connected to the voltage generating circuit U3, the data curing circuit U4 and the data reading circuit U5; when the starting circuit U1 is turned on, the control voltage generating circuit U3 and the data curing circuit U4 are valid for the PROM at the same time, and the data is controlled when the starting circuit U1 is released. The read circuit U5 is valid;

The address generation circuit U2 provides address lines to be respectively connected to the address lines of the PROM; the address lines of the address generation circuit U2 are respectively controlled by control switches;

The voltage generation circuit U3 generates a pulse voltage that meets the requirements of PROM programming, and the pulse voltage controls the programming pin of the PROM;

Data solidification circuit U4 is made up of the bus buffer of data forming circuit and three-state output; Described data forming circuit provides data line and the data line of PROM is respectively connected; The data line of data forming circuit is respectively controlled by control switch;

The data read circuit U5 is composed of a data display circuit and a three-state output bus buffer. The start circuit U1 controls the three-state gate of the bus buffer in the data read circuit U5 to read data from the PROM.

A further preferred solution, the manual PROM data curing device, is characterized in that: the start circuit U1 is composed of a micro switch; the start circuit U1 micro switch button is connected to a high level by manual touch, and the control voltage generation circuit U3 , The data curing circuit U4 is valid for the PROM at the same time, and when the micro switch of the starting circuit U1 is touched and released, the button is automatically grounded, and the control data reading circuit U5 is valid.

A further preferred solution, the manual PROM data curing device is characterized in that: the address generating circuit U2 is composed of eight button switches, eight light-emitting diodes, and eight resistors, and is used to provide eight address lines and PROM The eight address lines are connected; the button switch is turned up to connect the address line to high level, the button switch is turned down to ground the address line, and the light-emitting diode of the address generating circuit U2 is used to display the state of the current address.

A further preferred solution, the manual PROM data curing device is characterized in that: the voltage generating circuit U3 includes a monostable oscillator, a driver, and a triode; by triggering the circuit U1 once, the voltage generating circuit U3 generates a PROM Pulse voltage required for programming.

Further preferred scheme, described a kind of manual PROM data curing device is characterized in that: the data formation circuit is made up of four button switches, four light-emitting diodes, four resistors; 4 data wires of data curing circuit U4 and The 4 data lines of the PROM are connected; the button switch is turned up to connect the data line to high level, and the button switch is turned down to ground the data line; by triggering the start circuit U1 once, the data curing circuit U4 is simultaneously generated on the 4 data lines One data pulse that meets the needs of PROM programming; the light-emitting diode of the data curing circuit U4 is used to display the current data status.

Beneficial effect

The invention has the advantages that the device can manually control data to be solidified into designated PROM storage units one by one, and can also manually control and read data from the designated PROM storage units one by one, so that the PROM storage space can be well utilized. The invention has the advantages of being simple, practical, small in size, light in weight, low in cost and easy to carry. The important data in the electronic product can be saved by using the invention, and at the same time, the key of the encryption program can be solidified.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a functional block diagram of a manual PROM data curing device of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

Referring to FIG. 1, a manual PROM data curing device includes: a startup circuit U1, an address generating circuit U2, a voltage generating circuit U3, a data curing circuit U4, and a data reading circuit U5.

The starting circuit U1 is composed of a micro switch. The starting circuit U1 is connected with the voltage generating circuit U3, the data curing circuit U4 and the data reading circuit U5. The micro switch button of U1 is connected to +5V by manual touch to control the voltage generating circuit U3 and the data curing circuit U4 to be valid for the PROM at the same time. When the micro switch of U1 is touched and released, the button is automatically grounded, and only the data reading circuit U5 is valid at this time.

The address generating circuit U2 is composed of eight button switches, eight light-emitting diodes, and eight resistors, and is used to provide eight address lines to connect with eight address lines of the PROM. Push the button switch up to dial the address wire to connect to +5V, dial the button switch down to connect the address wire to ground, the eight address wires of U2 provide 256 different addresses for the PROM, and the LED of the address generation circuit U2 is used to display the current address state.

The voltage generating circuit U3 is composed of a monostable oscillator, a driver, a triode and other circuits. By triggering the micro switch of U1 once, U3 generates a pulse voltage that meets the requirements of PROM programming, and the output pulse controls the programming pin of PROM. The present invention adopts 74LS123 as the monostable oscillator.

The data curing circuit U4 is composed of a data forming circuit and a three-state output bus buffer, wherein the data forming circuit is composed of four toggle switches, four light-emitting diodes, and four resistors. The 4 data lines of U4 are connected with the 4 data lines of PROM, the data line is connected to +5V when the button switch is pushed up, and the data line is grounded when the button switch is moved down. By triggering the micro switch of U1 once, U4 simultaneously generates a data pulse that meets the needs of PROM programming on the 4 data lines. LEDs are used to display the status of the current data. The present invention adopts 74LS125 as the bus buffer of three-state output.

The data reading circuit U5 is composed of a data display circuit and a three-state output bus buffer, and controls the three-state gate of the bus buffer through the grounding of the micro switch of U1 to realize reading data from the PROM. The present invention adopts 74LS125 as the bus buffer of three-state output.

The invention can solidify the data one by one into the designated PROM storage unit by manual control, and can also read the data one by one from the designated storage unit of the PROM by manual control. The invention has the advantages of being simple, practical, small in volume, light in weight, low in cost and easy to carry. The invention can be used for data curing and data detection of PROM in airborne electronic products.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations to the present invention. Variations, modifications, substitutions, and modifications to the above-described embodiments are possible within the scope of the present invention.

Claims (4)

1. A manual PROM data solidification device, characterized in that: comprise starting circuit U1, address generation circuit U2, voltage generation circuit U3, data solidification circuit U4, data reading circuit U5; The starting circuit U1 is connected with the voltage generating circuit U3, the data curing circuit U4 and the data reading circuit U5; The starting circuit U1 is composed of a micro switch; the micro switch button of the starting circuit U1 is connected to a high level by manual touch, the control voltage generating circuit U3 and the data curing circuit U4 are valid for the PROM at the same time, and the micro switch of the starting circuit U1 is touched to release , the button is automatically grounded, and the control data reading circuit U5 is valid; The address generation circuit U2 provides address lines to be respectively connected to the address lines of the PROM; the address lines of the address generation circuit U2 are respectively controlled by control switches; The voltage generation circuit U3 generates a pulse voltage that meets the requirements of PROM programming, and the pulse voltage controls the programming pin of the PROM; Data solidification circuit U4 is made up of the bus buffer of data forming circuit and three-state output; Described data forming circuit provides data line and the data line of PROM is respectively connected; The data line of data forming circuit is respectively controlled by control switch; The data read circuit U5 is composed of a data display circuit and a three-state output bus buffer. The start circuit U1 controls the three-state gate of the bus buffer in the data read circuit U5 to read data from the PROM. 2. A kind of manual PROM data solidifying device according to claim 1, it is characterized in that: address generation circuit U2 is made up of eight button switches, eight light-emitting diodes, eight resistors, is used to provide eight address lines and The eight address lines of the PROM are connected; the button switch is turned up to connect the address line to high level, the button switch is turned down to ground the address line, and the light-emitting diode of the address generating circuit U2 is used to display the state of the current address. 3. a kind of manual type PROM data curing device according to claim 1, it is characterized in that: voltage generation circuit U3 comprises monostable oscillator, driver, triode; By triggering once start circuit U1, voltage generation circuit U3 produces a satisfying Pulse voltage required for PROM programming. 4. A kind of manual PROM data curing device according to claim 1, characterized in that: the data forming circuit is made up of four button switches, four light-emitting diodes, and four resistors; 4 data lines of the data curing circuit U4 Connect with the 4 data lines of the PROM; push the button switch up to connect the data line to high level, and turn the button switch down to ground the data line; by triggering the start circuit U1 once, the data curing circuit U4 will be on the 4 data lines at the same time Generate a data pulse that meets the needs of PROM programming; the light-emitting diode of the data curing circuit U4 is used to display the state of the current data.