Building 8-Bit Computer Parts List

Building 8-Bit Computer Parts List

I was recently at the San Diego Maker Faire and I came across a interesting booth.

John Wolf was sitting in front of his 8-bit computer that he made out of logic gates.  I was very excited to see this and quickly began asking him questions about how he built this.  He has a great set of slides that I’ll link to here that explain everything about what he did.

His work was based off of Ben Eater’s tutorial about building the 8-bit computer.  Ben goes into great detail in his YouTube videos about how each part works.

I decided I wanted to try and build a 8-bit computer for my self, however the first challenge is finding all the parts.  There is a parts list on Ben’s site but some of the links are outdated or I have found better deals on other sites.  Below is my parts list for the 8-bit computer.

Total cost for all parts including shipping was $231.61.

 

Ebay

1 74LS76 (Dual JK flip-flop) $2.00 $2.00 Ebay OUT
Ebay listing: 1pcs HD74LS76AP Dual J-K Flip-Flops (with Preset and Clear) DIP16

2 74LS189 (64-bit random access memory) $1.50 $3.00 Ebay RAM
Ebay listing: 1PCS SN74LS189AN 74LS189 DIP-16 IC

4 28C16 EEPROM $6.00 $24.00 Ebay OUT, CONT
Ebay listing: 1pcs AT28C16-15PU CMOS E2PROM DIP-24 ATMEL

Total with shipping: $19.32

 

Digikey (purchase everything here with my shared cart link here!)

Index Quantity Part Number Manufacturer Part Number Description Customer Reference Backorder Unit Price Extended Price
10 CF14JT1K00CT-ND CF14JT1K00 RES 1K OHM 1/4W 5% AXIAL 0 0.04000 $0.40
10 CF14JT10K0CT-ND CF14JT10K0 RES 10K OHM 1/4W 5% AXIAL 0 0.04000 $0.40
2 CF14JT100KCT-ND CF14JT100K RES 100K OHM 1/4W 5% AXIAL 0 0.10000 $0.20
10 CF14JT470RCT-ND CF14JT470R RES 470 OHM 1/4W 5% AXIAL 0 0.04000 $0.40
1 CF14JT1M00CT-ND CF14JT1M00 RES 1M OHM 1/4W 5% AXIAL 0 0.10000 $0.10
1 3386F-1-105TLF-ND 3386F-1-105TLF TRIMMER 1M OHM 0.5W PC PIN 0 2.48000 $2.48
6 BC2662CT-ND K103K10X7RF5UH5 CAP CER 10000PF 50V X7R RADIAL 0 0.15000 $0.90
2 BC2665CT-ND K104K10X7RF5UH5 CAP CER 0.1UF 50V X7R RADIAL 0 0.18000 $0.36
1 478-8041-1-ND TAP105K035SRW CAP TANT 1UF 35V 10% RADIAL 0 0.75000 $0.75
4 LM555CNFS-ND LM555CN IC OSC SINGLE TIMER 8-DIP 0 0.50000 $2.00
1 296-1626-5-ND SN74LS00N IC GATE NAND 4CH 2-INP 14-DIP 0 1.14000 $1.14
5 296-1629-5-ND SN74LS04N IC HEX INVERTER 14-DIP 0 0.69000 $3.45
2 296-1633-5-ND SN74LS08N IC GATE AND 4CH 2-INP 14-DIP 0 0.63000 $1.26
1 296-1658-5-ND SN74LS32N IC GATE OR 4CH 2-INP 14-DIP 1 0.59000 $0.59
2 296-1669-5-ND SN74LS86AN IC GATE XOR 4CH 2-INP 14-DIP 2 0.59000 $1.18
1 296-1639-5-ND SN74LS138N IC 3-8 LINE DECODER/DEMUX 16-DIP 0 0.81000 $0.81
1 296-1640-5-ND SN74LS139AN IC DUAL 2-4 LINE DECODER 16-DIP 0 0.81000 $0.81
4 296-1645-5-ND SN74LS157N IC QUAD 2-1 DATA SEL/MUX 16-DIP 0 0.77000 $3.08
4 296-1646-5-ND SN74LS161AN IC 4-BIT SYNC COUNTER 16-DIP 0 0.86000 $3.44
7 296-33970-5-ND SN74LS173AN IC D-TYPE POS TRG SNGL 16DIP 0 1.50000 $10.50
6 296-1655-5-ND SN74LS245N IC BUS TRANSCEIVER 8BIT 20DIP 6 0.87000 $5.22
1 296-1657-5-ND SN74LS273N IC D-TYPE POS TRG SNGL 20DIP 1 0.83000 $0.83
2 296-33987-5-ND SN74LS283N IC 4BIT BINARY FULL ADDER 16-DIP 0 1.54000 $3.08
1 CT2088-ND 208-8 SWITCH SLIDE DIP SPST 50MA 24V 0 0.83000 $0.83
1 CT2084-ND 208-4 SWITCH SLIDE DIP SPST 50MA 24V 0 0.69000 $0.69

Ups ground, 1 shipment was $9.99
Total with shipping: 54.89

 

Amazon

LEDs
DiCUNO 450pcs(5 colors x 90pcs) 5mm LED Light Emitting Diode Round Assorted Color White/Red/Yellow/Green/Blue Kit Box
$12.99

LED Displays
uxcell 10 Pcs Common Cathode 10-Pin 1 Bit 7 Segment 0.56″ Red LED Display Digital Tube
$6.68

Breadboards x14
BB830 Solderless Plug-in BreadBoard, 830 tie-points, 4 power rails, 6.5 x 2.2 x 0.3in (165 x 55 x 9mm)
$110.6

Wire kit
Elenco Solid Hook-Up Wire Kit 6 Colors in a dispenser box # WK-106
$14.47

Tact Switch
microtivity IM206 6x6x6mm Tact Switch (Pack of 12)
$4.85

Latching Tactile Switch
10Pcs 6Pin Through Hole Mount DPDT Latching Tactile Switch 8x8mm
$7.81

Total with Amazon Prime (free 2 day shipping): $157.40

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