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Elenco 500-in-1 Electronic Project Lab User Manual

Page 5

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199. RANDOM ACCESS DISPLAY

121

200. DECADE COUNTER

121

201. BCD COUNTER WITH DISPLAY

122

202. OCTAL COUNTER WITH LINE DECODER

122

203. OCTAL COUNTER WITH DISPLAY

123

204. DECADE COUNTER WITH DISPLAY

123

205. DECADE COUNTER WITH DISPLAY II

124

206. BCD TO 7-SEGMENT DECODER

124

13) Amusement in Digital Land


207. VCO BY NOR GATE

125

208. PULSE-DELAYED CIRCUIT

125

209. NAND GATET ONE GENERATQR

126

210. TRANSISTOR TIMER

126

211. NOISE-SIGNAL DISCRIMINATOR

127

212. PULSE STRETCHER

127

213. BIDIRECTIONAL BUFFER

128

214. VARIOUS INVERTERS

128

215. ELECTRONIC SWITCH

129

216. TONE BURST GENERATOR

129

217. DIGITALTIMER

130

218. DIGITAL TIMER II

130

219. TEN COUNT BUZZER

131

220. PRESS FIRST

131

221. TARGETRANGE

132

222. CATCH THE EIGHT

132

223. SOS ALERT

133

224. WHEEL OF FORTUNE

133

225. LEAPIN LEDS

134


14)

Surprise and Fun Revisited


226. EXPERIMENT OF ELECTROMAGNETIC INDUCTION

134

227. ELECTRONIC CANDLE

135

228. CONSTANT CURRENT CIRCUIT

125

229. A PHONY COUNTER

136

230. ALPHABET FLASHER

136

231. WINKING LEDS

137

233. DELAYED TIMER II

137

234. VOICE LEVEL METER

138

225

CROSSING SIGNAL

139

236

OCTAVE GENERATOR

139

237. BUZZIN LED

140

238. SON OF BUZZIN LED

140

239. SOUND OUT TIMER

141

240. SOUND STOP

141

241. BIG MOUTH!

142

242. LIGHT OR SOUND

142

243. BE YOUR OWN MULTIVIBRATOR

143

244. ANTICIPATION

143

245. SET/RESET MATCH

144


15) Testing and Measuring Circuits

246. CIRCUIT CONTINUITY CHECKER

144

247. ACOUSTIC OHMMETER

145

248. AUDIO SIGNALTRACER

145

249. AUDIO SIGNAL GENERATOR

146

250. METAL DETECTOR

146