This project is a remake of Radio-86RK - a soviet ham radio computer. The original design was published in Radio Magazine, an amateur radio and DIY electronics oriented publication, starting from ...

As for the BOM, it features two ICs: a 74LS00 latch and NE555 timer, along with the expected stack of passives and switches, both through-hole and SMD. The PCB contains break-off boards for the ...

This paper presents the design of an integrated circuit tester, specifically the 741 and 74LS00. The effect observed on the attitude of the students after using the device (functionality check ...

A line drawing of the Internet Archive headquarters building façade. An illustration of a magnifying glass. An illustration of a magnifying glass.

The obtained 1 Hz signal is fed to two 74LS90 counters (U11 and U12) that count seconds. The seconds reset circuit implemented using two 74LS00 NAND gates (U4A and U4B). This circuit resets both ...

Over the years, readers have often commented that microcontrollers (or more specifically, the Arduino) are overkill for many of the projects they get used in. The admonition that the creator ...

4096 bytes in two EPROMs ICs with the exception, of course, of CS. The enable signals for this pin are taken from the outputs of the 74LS00. One of the EPROMs (refer- red to here as 2716 (1)) is ...

In my previous column, we looked at a data sheet for the CD4011 NAND gate. I was about to compare the CD4011 with the 7400, 74LS00, and 74S00 TTL parts that we looked at in this earlier column when I ...

The first logic gates I worked with were of the 7400-series and 74LS00-series families (in conversation, people would say, “seventy-four-hundred series,” when talking about 7400-series parts). The ...

What's that 74LS00 doing in this? Could I just omit it and wire pin 5 on the midi connector to pin 12 on the gameport? I'm only looking to get midi out to connect a sound card to my SC-55 ...

This is a very simple square wave generator circuit built with IC 74LS00 that can generate square signals with frequencies between 20 Hz and 1 MHz. Its stability is good enough for most applications.